Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
das filosofia » da filosofia, la filosofia, di filosofia
filosofia de » filosofia del
studium das » studium des, studium der, studium die
test im » test i, test ii, test iv

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 im) OR (fest im)) studium das filosofia de litterature.
• Adding a wildcard symbol may retrieve word variants: ((test im) or (fest im)) studium das filosofia de litterature*.