Perhaps you should try some spelling variations:
et litterature » la litterature, art literature
da filosofia » la filosofia, di filosofia, a filosofia
filosofia et » filosofia e, filosofia en, filosofia del
des studium » des studiums, dein studium, ins studium
dem 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: test ((((des studium) OR (dem studium))) OR (das studium)) da filosofia et litterature.
• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((((des studium) OR (dem studium))) or (das studium)) da filosofia et litterature".
• Adding a wildcard symbol may retrieve word variants: test ((((des studium) OR (dem studium))) or (das studium)) da filosofia et litterature*.