How to change matching queries results

Hello guys.

I am having an Index with courses. Nothing too fancy. But for example if I search “excel level 2” and go to the very last pages, I also get results for something like this:
“Microsoft Excel 2010 - Level 3 / Advanced”

This has not level 2 in title but it is matched because of that “2” in the 2010 part. It’s fair that those results are at the end of the list, but are not relevant to the query.

How can we get rid of those results and make the results a little stricter?