Perhaps you should try some spelling variations:
"clinical sciences / philosophy" » "clinical science / philosophy", "technical sciences / philosophy", "empirical sciences / philosophy"
"chemical sciences / philosophy" » "medical sciences / philosophy", "physical sciences / philosophy", "mathematical sciences / 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 sciences / philosophy\") OR (\"chemical sciences / philosophy\"))".
• Removing quotes may allow a broader search: (( clinical sciences / philosophy ) OR ( chemical sciences / philosophy )).
• Adding a wildcard symbol may retrieve word variants: (("clinical sciences / philosophy") OR ("chemical sciences / philosophy"))*.