title: Find all lines that contain specific strings in notepad++
body: <p>I have text file and I would like to search for lines that has specific partial strings and shows only the lines that has those strings</p>
  
  <h1>Example:</h1>
  
  <blockquote>
    <p>Please help me in this issue<br>
    Thanks a lot for great help<br>
    I receive help in this forum in great way. Please have a look<br>
    You are great people<br>
    Help me please<br>
    in this line help is only exists</p>
  </blockquote>
  
  <p>These lines have to be searched by any string, in this case both <code>pleas</code> and "help". No case sensitivity is required.</p>
  
  <h2>The expected lines that would be displayed :</h2>
  
  <blockquote>
    <p>Please help me in this issue<br>
    I receive help in this forum in great way. Please have a look<br>
    Help me please</p>
  </blockquote>
  
  <p>I have used this pattern and it works well for me</p>
  
  <pre><code>(?-s)(?=.*plea)(?=.*help).*
  </code></pre>