Search for posts based on their url in the admin?

Here’s one way to support searching for post slugs in the backend.

Let’s invoke this kind of search by the slug: string in the search term.

Example

To search for slugs that end in -2 we want to be able to search for:

slug:*-2

where * is the wildcard.

Demo Plugin

Here’s a demo plugin that might need further testing and adjustments:

add_filter( 'posts_search', function( $search, \WP_Query $q ) use ( &$wpdb )
{
    // Nothing to do
    if(    
           ! did_action( 'load-edit.php' ) 
        || ! is_admin() 
        || ! $q->is_search() 
        || ! $q->is_main_query() 
    )
        return $search;

    // Get the search input
    $s = $q->get( 's' );

    // Check for "slug:" part in the search input
    if( 'slug:' === mb_substr( trim( $s ), 0, 5 ) )
    {
        // Override the search query 
        $search = $wpdb->prepare(
            " AND {$wpdb->posts}.post_name LIKE %s ",
            str_replace( 
                [ '**', '*' ], 
                [ '*',  '%' ],  
                mb_strtolower( 
                    $wpdb->esc_like( 
                        trim( mb_substr( $s, 5 ) ) 
                    ) 
                )
            )
        );

        // Adjust the ordering
        $q->set('orderby', 'post_name' );
        $q->set('order', 'ASC' );
    }
    return $search;
}, PHP_INT_MAX, 2 );

This is based on the _name__like plugin in my previous answer here.