Perhaps you should try some spelling variations:
la litterature » a literature
la literatura » a literature
des studium » des studiums, das studium, dein studium
dem studium » das studium, im studium, zum studium
a filosofia » la filosofia, e filosofia, di filosofia

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 ((des studium) OR (dem studium)) a filosofia ((la literatura) OR (la litterature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((des studium) or (dem studium)) a filosofia ((la literatura) OR (la litterature))".
• Adding a wildcard symbol may retrieve word variants: test ((des studium) or (dem studium)) a filosofia ((la literatura) OR (la litterature))*.