Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
die filosofia » di filosofia, de filosofia, e filosofia
duale studie » duale studien, duale studium, duales studium
filosofia la » filosofia da, filosofia le, filosofica da
studie die » studie der

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 test) duale studie die filosofia la literatura*.