Select all that contains in MySql

I have built a search function that searches a table for all items that match what you enter into the search field. I would like it to return all items that contain a certain string rather that matches. For example, I want to have it so that if I enter M in the search field, it will return all items that start with M. Here is what I have so far. $query = "SELECT * FROM software_assets WHERE $searchType LIKE '$search' "; Thanks, Mike