Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
filosofia de » filosofia del
a filosofia » la filosofia, e filosofia, di filosofia
studium a » studium am, studium ad, studium _
test das » test day, west das, testen das
test des » test der, test test

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((test das) OR (test des)) studium a filosofia de literatura*".