Perhaps you should try some spelling variations:
duales studium » das studium
duale studien » duale studium, scale studien, dualen studium
da literature » a literature, da literatura, la literature
filosofia da » filosofia de, filosofia del, filosofia e
e filosofia » la filosofia

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: "test ((duale studien) OR (duales studium)) e filosofia da literature*".