Help with a MySQL search query

Hello,
I am trying to make a search that will look into multiple fields in my mysql table but all I have got to work so far is this that one searches one field.


$query = "SELECT * FROM ln_establishments WHERE est_name LIKE '%".$_POST['search_term']."%' ";

I have also tried doing a “WHERE est_name, est_desc” but no luck there so it must not be correct syntax. Any help or pointers would be awesome. Thank you!