title: finding string that contain special caracters in mongodb using $regex
body: <p>i want to search names that contains some special caraters like &amp;, ô, à...</p>
  
  <p>in my code i have this :</p>
  
  <pre><code>options.title = {'$regex': query, $options:'i'};
  </code></pre>
  
  <p>query may be name like that : <code>B&amp;B Hôtel</code></p>
  
  <p>i have tried that code but it does not giving any thing, so any have an idea please.thank you for advance.</p>