Perhaps you should try some spelling variations:
2f philosophy » 24 philosophy, f philosophy, 20 philosophy
23 philosophy » 3 philosophy, 13 philosophy, 24 philosophy
6 philosophie » der philosophie, die philosophie
2 philosophy » a philosophy
6 philosophy » a philosophy
1 philosophy » a philosophy

Try widening your search to All Fields.

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: %22science %((2f philosophy) OR (((23 philosophy) OR (((2 philosophy) OR (((((6 philosophy) OR (6 philosophie))) OR (1 philosophy))))))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22science %((2f philosophy) or (((23 philosophy) or (((2 philosophy) or (((((6 philosophy) OR (6 philosophie))) or (1 philosophy))))))))%22".
• Adding a wildcard symbol may retrieve word variants: %22science %((2f philosophy) or (((23 philosophy) or (((2 philosophy) or (((((6 philosophy) OR (6 philosophie))) or (1 philosophy))))))))%22*.