Perhaps you should try some spelling variations:
duale studium » duales studium, dualen studium, das studium
das filosofia » da filosofia, la filosofia, a filosofia
di filosofia » la filosofia, e filosofia
y literatura » la literatura
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 ((das filosofia) OR (di filosofia)) y literatura*".