Perhaps you should try some spelling variations:
de filosofia » e filosofia, di filosofia, la filosofia
filosofia de » filosofia del
de literatur » de literatura, de literatuur, de litterature
studium de » studium der, studium des, studium die
test das » test des, test day, west das

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: test das studium de filosofia de literatur*.