title: plone 4 new style collection filtering with "and" operator
body: <p>I have been trying to use the new collection in plone 4.2.1 to filter a set of documents. I can not use the 'and' operator to get the result I need. </p>
  
  <p>For example I have the following documents:</p>
  
  <ul>
  <li>document1, tag 'yellow'</li>
  <li>document2, tag 'yellow', 'red'</li>
  <li>document3, tag 'red'</li>
  </ul>
  
  <p>How do I filter the collection to show only document 2?</p>