if i search for the document sets ,then only document set should come in search results not his documents

My scenario is.

We need the document sets to appear in the search. It should just show as a document set. All document under the document set should not show.

The issue i am facing right now is , if the document set contains the documents with the same/partly same name ,then they also appear in the search results. So , i have to limit that.

& also i want to do this only for specific document library , Means if the document set i am searching is in that specific library than only this condition should work.