title: Notepad++ search with a logical AND
body: <p>Using Notepad++ I need to find lines that would contain 2 keywords (both).</p>
  
  <p>I've found <a href="https://stackoverflow.com/questions/4947561/can-i-combine-2-regex-with-a-logic-or">how to combine 2 regex with a logical 'or' operator.</a></p>
  
  <p><strong>Example:</strong> <code>(searchword1)|(searchword2)</code></p>
  
  <p>But how do I combine with logical 'and'?</p>
  
  <p>Tried &amp;, &amp;&amp;.. no success.</p>
  
  <p><strong>Example of input:</strong></p>
  
  <pre><code>The CAT goes up and down the ROAD.
  The CAT goes up and down the CITY.
  </code></pre>
  
  <p><strong>Search words:</strong> <code>CAT &amp; ROAD</code></p>
  
  <p><strong>Expected result:</strong> line1</p>