title: Rewrite/change WordPress search mechanism
body: <p>I've been looking for a way to change the WordPress searching mechanism. My database has several custom tables, which I want to take into account when searching the site. Also, I wan't to implement a levenshtein function for coming up with lines like "Did you mean [another term]?" when somebody makes a spelling error.</p>
  
  <p>Is there a hook, action or function I can implement or change to allow these kind of functions? Any help is greatly appreciated. </p>
  
  <p>Kind regards,</p>
  
  <p>Reinder</p>