Search problem when slug matches and I still want more results

The search was updated that if a slug matched then it redirected them to there. However, the problem is that what if I search for "rest", it will redirect me to the rest package, but I was looking for other rest packages. Therefore, I am stuck!

The search needs to update and the condition should be the following:

Given a search term
and when the slug matches directly
and there are more results found
then show search results

Given a search term
and when the slug matches directly
and there are NO results found
then redirect to the slug matched.