So when you want to limit the information based on multiple criteria you should get the criteria setup and make sure that the separator is set to AND.
For example in your current search you have both columns selected. This means that if you enter a value that is found partly or fully in either of these columns all records that have a match will be returned.
To make it more limiting you should break this into multiple criteria. They will be almost exactly like each other but the search separator of AND between them will ensure that it is found in both and only where it is found in both will the matching record be returned. If you would like to do an exact match type search then you should set it up that way instead of the keyword includes type search.