Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
duale studium » duales studium, dualen studium, das studium
da filosofia » la filosofia, di filosofia, a filosofia
d filosofia » di filosofia, de filosofia, e filosofia
test duale » test double, test delle, test orale

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 studium ((d filosofia) OR (da filosofia)) de literatura*".