title: Search for multiple strings in several files with Sublime 3
body: <p>I know how to search for a <em>single string</em> in several files at once with Sublime 3 (explained <a href="https://stackoverflow.com/questions/20519040/search-in-all-files-in-a-project-in-sublime-text-3">here</a>).</p>
  
  <p>What I need to do is to search for <em>multiple strings</em> in several files. 
  I've tried going to <code>Find in files</code> and setting:</p>
  
  <pre><code>Field:  string1 \&amp; string2
  Where: /path_to_folder_containing_the_files_I_want_to_ search/
  </code></pre>
  
  <p>(where <code>string1</code> and <code>string2</code> are the strings I want to search for) but that doesn't seem to work.</p>
  
  <p>Can this be done at all?</p>