Perhaps you should try some spelling variations:
"clinical evidence / philosophy" » "empirical evidence / philosophy"
"clinical science / philosophy" » "political science / philosophy", "ecological science / philosophy", "medical science / philosophy"

Try widening your search to All Fields.

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"clinical science / philosophy\") OR (\"clinical evidence / philosophy\"))".
• Removing quotes may allow a broader search: (( clinical science / philosophy ) OR ( clinical evidence / philosophy )).
• Adding a wildcard symbol may retrieve word variants: (("clinical science / philosophy") OR ("clinical evidence / philosophy"))*.