Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
duale studium » duales studium, dualen studium, das studium
di filosofia » la filosofia, e filosofia
filosofia de » filosofia del
studium di » studium die, studium i, studium ii

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: "(testo OR test) duale studium di filosofia de literatura*".