Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
ad filosofia » a filosofia, la filosofia, di filosofia
zum studium » fur studium, im studium
e filosofia » la filosofia
test zum » tests zum, test zur, fest zum

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "test zum studium ((ad filosofia) OR (e filosofia)) de literatura".
• Adding a wildcard symbol may retrieve word variants: test zum studium ((ad filosofia) OR (e filosofia)) de literatura*.