Perhaps you should try some spelling variations:
de litterature » la litterature
et litterature » la litterature, art literature
die filosofia » di filosofia, de filosofia, e filosofia
studium die » studium der, studium des
west das » westen das, west ak, west a

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: west das studium die filosofia ((de litterature) OR (et litterature)).
• Adding a wildcard symbol may retrieve word variants: west das studium die filosofia ((de litterature) or (et litterature))*.