title: Amazon Product Advertising API ItemSearchRequest
body: <p>I am using Amazon's Product Advertising API to search for products and it works out well. I get results I need. However, when I search for "Bishoujo Catwomen", instead of getting records whose title contains (Bishoujo &amp;&amp; Catwomen), it does a (Bishoujo || Catwomen) and hands me the results.</p>
  
  <p>This is my code:</p>
  
  <pre><code>ItemSearchRequest request = new ItemSearchRequest();                    
  request.SearchIndex = "All";
  request.Keywords = "Bishoujo Catwomen";
  </code></pre>
  
  <p>I want my SearchIndex to be All and I only need titles whose name has both Bishoujo and Catwomen. How can I achieve that?</p>