Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
le literatura » la literatura, e literatura, de litteratura
a filosofia » la filosofia, e filosofia, di filosofia
de studium » dem studium, des studium, d studium
studium a » studium am, studium ad, studium _
test de » test der, test des, est de

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 de studium a filosofia ((le literatura) OR (de literatura)).
• Adding a wildcard symbol may retrieve word variants: test de studium a filosofia ((le literatura) or (de literatura))*.