Is it possible to show subdomain posts in main domain search result?

Yes.

You can use native WordPress feeds, or you can create your own feed, e.g. with only the title and link to each post.

Than you can access this feed from the other domain. You will also have to update your search results template accordingly.

It gets a bit more tricky if you use some advanced AJAX dynamic search solution – in that case you’d have to do a little more coding.

Related Posts:

  1. Consistent and Admissible Heuristics
  2. How do you make Vim unhighlight what you searched for?
  3. How to search for (partial match) display names of WordPress users?
  4. How can i move search results onto a specific page?
  5. Unified search across separate WordPress installations
  6. How to insert a span inside a search form?
  7. Extending search query with additional $sentence value
  8. Search only blog posts (default WP search widget)
  9. Exclude pages from WordPress search result page
  10. Disable Redirect to Product Page on Search Results Page in WooCommerce [closed]
  11. WP User Query with search columns and meta query
  12. Combining Meta_Query key values for one array
  13. Search: Only One Result Returned
  14. How to redirect search result page to post
  15. Custom Permalinks Break Search Pagination
  16. Include Author profile in search results
  17. Adding arg to search results page
  18. search only pages if on page
  19. Search form with Category and Sub Category
  20. I’m trying to expand the scope of the default WP search algorithm. What am I doing wrong?
  21. How to return HTTP 404 when no search results found?
  22. Change query variable for wordpress search
  23. Search Results: Differentiate posts and pages
  24. How does WordPress know if a URL doesn’t exist?
  25. Highlight Search Results in Function.php
  26. More than one search results page template
  27. How to make a search form?
  28. Quick and Easy way to Add Search to the P2 Theme?
  29. Using ElasticSearch on WordPress
  30. How to restrict wordpress search to pages and disable products listing search?
  31. WordPress does not find author pages in search
  32. Display post matching the exact search term
  33. Show only “Pages” – not posts – on search page
  34. Search Everything & WP 3.7 update issues [closed]
  35. remove post edit.php search form and replace with my own
  36. Creating a Search Array From Multiple Tables
  37. Installing Solr for dedicated search
  38. custom wp_dropdown_categories items in wordpress
  39. How do I make search only search in post content?
  40. How can i preserve wordpress database encoding after using wp-cli search-replace with –export flag?
  41. How to sort by columns within a search result without displaying all rows again after sorting
  42. How to add re-captcha to wordpress search?
  43. Where should I start looking if I want to implement my own custom search?
  44. How can I get a traceback on function calls?
  45. Knowledge base high performance Live Search
  46. Search buddypress groups with querystring in url
  47. Limit search to a specific folder in website
  48. Make search result display 1 Company or 2 Companies
  49. How do i append UNION SQL Query with default search query
  50. How to add one more query string with search query string
  51. Why is this search form not submitting when button is clicked?
  52. Search within table?
  53. Search returns everything if search term has a space
  54. Search by meta_query
  55. Restrict Search Results to Post Author
  56. Intelligent Search Filtering
  57. Changing the ORDER BY in WordPress default search function
  58. How to search titles/artist/album within a playlist, and only lists the results that match?
  59. Exclude posts with certain meta data from search results
  60. Custom search page wont allow URL params
  61. How to detect if the referer is 404 page?
  62. Included posts on a page searchable
  63. How to remove notice inside search.php when no results are found?
  64. Changing search terms results a 403 – dsIDXpress Pro plugin [closed]
  65. Exclude certain Gutenberg blocks from search results
  66. search: get minimum number of post for each post type
  67. WordPress Search function with partial and exact match
  68. WordPress REST API Search decoded URL with cyrillyc symbols
  69. WordPress User Search Based on Latitude and Longitude
  70. Remove gray header on Search Result page on WordPress
  71. How do i get The dropdown to have the value of the sub cat and custom fields
  72. Why are archived pages showing up in searches and able to be accessed?
  73. Enable query based wordpress search ?s=
  74. Partial searches for wp_usermeta
  75. Search terms in other language turns out to question mark and symbols
  76. Adding thumbnail to search results & changing content.php
  77. Search Engine Visibility Issue in WordPress
  78. Page has no template
  79. Create a custom and powerful search form
  80. How to search for categories instead of products in Woocommerce?
  81. Search results show only content by admin post authors
  82. Buddypress Activity search with OR query instead of AND
  83. How to exclude one post format from search result?
  84. Help with WordPress search
  85. Search & Replace trailing strings
  86. Custom Search Form WP_Meta_Query – Filtering Custom Fields
  87. Search not displaying results
  88. Relevanssi show only 1 result
  89. I need a custom search page to lead to search.php but it goes to index.php
  90. How To Change Url Doing Some Changes in Search Form
  91. Adding search box for admin on custom admin page
  92. Different search results with WordPress and Relevanssi
  93. How do I create a search form that searches only within a custom post type?
  94. Two Querys in one Search – Category-Tag nightmare – HOW?
  95. Making ACF fields appear in search results
  96. Code in the excerpt of the search page
  97. WordPress REST API response – not returning results from custom taxonomy, only from title
  98. Members location sortable based on UK Postcode
  99. I had removed my phone number from my website footer, but months later it still appears once I look it up on google, how to remove it?
  100. search posts by POST ID