Perhaps you should try some spelling variations:
duale studium » duales studium, dualen studium, das studium
das filosofia » da filosofia, la filosofia, di filosofia
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
studium das » studium des, studium der, studium die

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 tests) duale studium das filosofia la literatura*".