title: querySelectorAll with multiple conditions
body: <p>Is it possible to make a search by querySelectorAll using multiple unrelated conditions? If yes how? And how to specify whether those are AND or OR criteria?</p>
  
  <p>For example:</p>
  
  <p>How to find all <strong>form</strong>s, <strong>p</strong>s and <strong>legend</strong>s with a single <strong>querySelectorAll</strong> call? Possible?</p>