Perhaps you should try some spelling variations:
clinical response » mechanical response, clinical results, optical response
clinical reports » clinical results
clinical report » clinical records, clinical results, technical report

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((clinical report) OR (clinical reports))) OR (clinical response)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((clinical report) OR (clinical reports))) or (clinical response))".
• Adding a wildcard symbol may retrieve word variants: ((((clinical report) OR (clinical reports))) or (clinical response))*.