Perhaps you should try some spelling variations:
"philosophical aesthetics" » "philosophy aesthetics", "philosophical hermeneutics", "philosophical aspects"
"philosophical ethics" » "philosophical ethical", "philosophical methods", "philosophy ethics"

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: "((\"philosophical ethics\") OR (\"philosophical aesthetics\"))".
• Removing quotes may allow a broader search: (( philosophical ethics ) OR ( philosophical aesthetics )).
• Adding a wildcard symbol may retrieve word variants: (("philosophical ethics") OR ("philosophical aesthetics"))*.