Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
duale studium » duales studium, dualen studium, das studium
die filosofia » di filosofia, de filosofia, e filosofia
studium die » studium der, studium des

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: (testo OR tests) duale studium die filosofia del literatura*.