title: How to search by keyword MySQL
body: <p>I made two tables</p>
  <ol>
  <li>for stored keywords</li>
  <li>have article titles and keywords</li>
  </ol>
  <p>In the article table, I'm storing keywords id in set form like (1,2,3,6,7)</p>
  <p>now I want to search by keywords and title by the maximum occurrence of user value;</p>
  <p>example:<br />
  keywords Table
  |keyword|id |<br />
  | ----- | - |<br />
  | pen   | 1 |<br />
  | paper | 2 |<br />
  | pencil| 3 |<br />
  | A4    | 4 |<br />
  | marker| 5 |</p>
  <p>Article table<br />
  title                         keyword<br />
  Magical pencil with paper         1,2,4</p>
  <p>user search magical pen</p>
  <p>How can search efficiently?</p>