Wildcard search in WP Query

WP_Query will add the % wildcard operators for a LIKE query. Just remove those. As is your query looks like LIKE '%\\%rocket\\%% which is not what you want. Try

var_dump($query->request);

And you can see that for yourself.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)