Perhaps you should try some spelling variations:
das filosofia » da filosofia, la filosofia, di filosofia
studium das » studium des, studium der, studium die
dem studium » das studium, im studium, zum studium
filosofia a » filosofia da, filosofia la, filosofia e

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: (test OR text) dem studium das filosofia a literature.
• Adding a wildcard symbol may retrieve word variants: (test or text) dem studium das filosofia a literature*.