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

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 texto) duale studium des filosofia la literatura*".