title: Add results into WordPress search results
body: <p>I would like to add/inject/append extra results into the WordPress search results.</p>
  
  <p>At the moment WordPress only allows you to "adjust" the query that is being executed on its own database, but doesn't allow you to modify (or in WordPress lingo, filter) the results array.</p>
  
  <p>I.e: If in WordPress I search for the term 'potato' all posts related to this term come back. I want to include results that I've obtained via a different service into the WordPress results set.</p>
  
  <p>Just to clarify, I'm getting my results from a 3rd party API call. Not from the WordPress database.</p>
  
  <p>Does anyone have an idea on how I can do this?</p>
  
  <p>Edit: Preferably this needs to happen in my WordPress plugin without having to change search templates.</p>