A loop with all articles with certain text strings in tags

Based on @birgire’s always-useful comments, I did write a workaround for you. What I’m doing is to first find the terms that match the search string. Then, based on the found terms I will do a query in those.

function wpse_posts_by_tagname( $string ) {

    // Let's find every tag that has 'coffee' in it's name
    $term_args = array(
        'taxonomy'             => 'post_tag',
        'fields'               => 'ids',
        'name__like'           => $string,
        // 'description__like' => $string, // You can also search in description. 
        // 'search'            => $string, // We can even search in the term's name! 
    );
    $terms = get_terms( $term_args );

    // Let's make an array of term IDs
    if ( empty( $terms ) || is_wp_error( $terms ) )
        esc_html_e( 'No matches found', 'text-domain' );

    // Alright we got'em, now query based on these
    $query_args = array(
        'post_type'      => 'post',
        'tag__in'        => (array) $terms,
        'posts_per_page' => 10 // Optional limitation of posts per page
    );
    $tag_query = new WP_Query( $query_args );

    if( $tag_query->have_posts() ){
        while( $tag_query->have_posts() ){
            $tag_query->the_post();
            the_title( 
                sprintf( '<h2><a href="https://wordpress.stackexchange.com/questions/274014/%s">', esc_url( get_permalink() ) ),
                '</a></h2>' 
            );
        }
        wp_reset_postdata();
    } else {
        esc_html_e( 'No matches found', 'text-domain' );
    }
}

Also it’s worth noting that you should use WP_Query instead of query_posts. There are endless articles on the internet about this, so I’m just gonna skip this part.

Related Posts:

  1. Show posts by tags excluding current post
  2. How to fix pagination for custom loops?
  3. Remove the Homepage Query
  4. Is `query_posts` really slower than secondary query?
  5. Are there any scenarios where the query_posts may be used?
  6. Transient not working for custom loops
  7. Related Posts loop – offset
  8. post loop causes wp_users and wp_usermeta DB queries for each users
  9. get_the_foo() in the loop – does it perform another query?
  10. If No Search Results, Show Posts from Alternate Search Query
  11. How to Loop within a Loop (Display Children and then Grandchildren)
  12. Category archive page – loop through posts of certain tag (with pagination) – pre_get_posts
  13. Loop posts only excluding first post
  14. Get titles of all posts with current tags except current post
  15. taxonomy tags 404 to custom post types
  16. Loop after page content
  17. Display most viewed post from last 30 days is not working correctly
  18. Query posts if meta key starts with
  19. 3 Posts in Loop, Show Stickies First
  20. How to go about combining dropdowns / filter queries?
  21. Query reset problem or flawed code to enable custom post type query
  22. Query last updated posts (posts updated in the last 24 hours)
  23. Conditional query that displays on Woo product attribute pages
  24. How do I use AJAX Query in my posts loop?
  25. How to show posts with multiple tags on tag.php?
  26. woocommerce get_price_html not pulling in correct price
  27. How to fix pagination for custom loops?
  28. How can I paginate this?
  29. How to display posts by vote count and if no value continue with latest posts with no votes?
  30. How to fix pagination for custom loops?
  31. Problem getting current post tags to show in a widget
  32. Split wordpress loop to multiple layouts
  33. Making a query to the DB using same parameters of loop
  34. How to show more random posts if Tag has less than 3 posts
  35. Exclude page name from loop
  36. Display Posts Only with Specific Tag
  37. Loop inside query
  38. how to replace get_template_part(‘loop’,’tag’) with explicit styled version?
  39. For each loop on every word in post
  40. Tags on page (not post) returns nothing – why? Improved clarified question!
  41. Include future posts in tags and in search
  42. get_delete_post_link() inside Loop stubbornly returns nothing
  43. loop inside the foreach
  44. Query posts only with actual text content (not including shortcode or images)
  45. Limit tags shown in post
  46. how to run loop in function.php that sends email based on specific conditions?
  47. Using has_tag() outside loop
  48. Exclude posts based on an array
  49. Query post & loop problem.
  50. Loops for cat links not looping for wordpress site
  51. How do I set the Stewart Search Template to return only published posts in the result
  52. Trying to get all links in my posts
  53. Custom Query with Sticky Posts
  54. Build a Page which shows the Oldest Post with specific Custom Field Value
  55. Query posts and display all dates in repeater field in chronological order
  56. How to fix pagination for custom loops?
  57. Get featured image outside the loop using foreach
  58. Alternative layout the loop
  59. Strange problem with wp_get_attachment_image_src database (db) query count
  60. Next 10 posts data of currently viewing post in blog page
  61. How to fix pagination for custom loops?
  62. WordPress Tags in class
  63. Secondary loop cuts off at 10 posts?
  64. How to fix pagination for custom loops?
  65. How to fix pagination for custom loops?
  66. Get query result before posts are displayed?
  67. Combine Query and Select Database to create directory loop
  68. WordPress loop: Display if posts exist
  69. wordpress showing all posts instead of date range
  70. How to show only specific tag in wordpress loop
  71. Tag custom loop show posts
  72. get_page() unlike Loop returns the post content without html tags. How can I fix this?
  73. How to do query_posts on tags pages
  74. Multiple loop with pagination in same page
  75. Tags outside the loop
  76. Query Loop Block: possible to restrict just child pages?
  77. Use Base-URL with Query-Loop
  78. Get post content from outside the loop
  79. Should we trust the post globals?
  80. How to Change Loop to Order Posts by Views (using wp-postviews plugin)
  81. Display subpages under parent page as a list within a loop
  82. Generating dynamic Tabs with multiple query post loop
  83. How do I override part of the main loop in my child theme?
  84. Blog page Server error 500 with stick post loop in query.php
  85. Show all posts using the template page and the loop?
  86. Custom loop not working
  87. facebook like, tweet and google+1 buttons inside the loop on home, archive and search pages and missing facebook like buttons
  88. Loop Offset for tag based “Related Posts”
  89. How do I put my frontpage featured image in a page template for home.php?
  90. How to print redux gallery feilds id? [closed]
  91. Echo array value
  92. static page with multiple loops breaks post pagination
  93. Help with if and else statement
  94. Shortcode with loop stacks output
  95. I want to load post in bootstrap Modal dynamically
  96. View tag description on page
  97. How to display just video post format?
  98. Sorting posts to make those with post thumbnail show up first
  99. Best way to check if a post with specific meta exists
  100. Error in Wordprewss loop for page template [closed]