title: implement add_filter with LIKE %some_title% in WP_Query
body: <p>I'm trying to add a filter to my WP_Query(below code) to search for post_title LIKE %some_title%</p>
  
  <pre><code>$args = array(
      'post_type' =&gt; 'product',
      'posts_per_page' =&gt; $page_size,
      'paged' =&gt; $page,
      'post_status'      =&gt; 'publish',
      'orderby'          =&gt; 'title', 
      'order'            =&gt; 'ASC',
  
    );
  
    $result = new WP_Query($args);
  </code></pre>
  
  <p>How to add a filter to match product title with $some_title?</p>