Perhaps you should try some spelling variations:
la litterature » a literature
della studium » della studiosa, dello studio, duale studium
das filosofia » da filosofia, la filosofia, di filosofia
filosofia la » filosofia da, filosofia le, filosofica da
dem studium » das studium, im studium, zum studium

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: testi ((della studium) OR (dem studium)) das filosofia la litterature.
• Adding a wildcard symbol may retrieve word variants: testi ((della studium) or (dem studium)) das filosofia la litterature*.