HTTP Template Multiple line search

We have a requirement for an HTTP monitor to search for a string that consists of sequential multiple lines. I seem to be able to only add a single line in the Search String part of the HTTP Template.

The example is we are looking for is:

"<h3>Last Run Results:</h3>

                       <div>

                           <h3>Groups: </h3>"

Is there a way to search for a string that consists of multiple sequential lines?