title: How to catch user search in Magento
body: <p>I need to create an extension for catching the query string of the user search.</p>
  
  <p>If it matches with a certain string, then show the results in the regular template; if not, show them in another layout.</p>
  
  <p>Is it possible? If so, how can I do it?</p>
  
  <p>Thanks.</p>