Perhaps you should try some spelling variations:
2 filosofico » y filosofico, y filosoficos, e filosofiche
e filosofica » e filosofia, e filosofiche, a filosofia
y literatura » la literatura
zu studie » zu studien, eu studies, zu studium
test zu » test zur, tests zu, test zum

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 zu studie ((2 filosofico) OR (e filosofica)) y literatura*".