Perhaps you should try some spelling variations:
filosofia da » filosofia de, filosofia del, filosofia della
studium das » studium des, studium der, studium die
filosofia e » filosofia de, filosofia del
do studium » d studium, das studium, dem studium
test do » test de, test d, test der

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 do studium das ((filosofia da) OR (filosofia e)) litterature.
• Adding a wildcard symbol may retrieve word variants: test do studium das ((filosofia da) or (filosofia e)) litterature*.