Perhaps you should try some spelling variations:
e filosofica » e filosofia, e filosofiche, y filosofia
y literatura » la literatura
a filosofia » la filosofia, e filosofia, di filosofia
de studie » die studie, de studio, e studie
test de » test der, test des, est de

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: test de studie ((a filosofia) OR (e filosofica)) y literatura.
• Adding a wildcard symbol may retrieve word variants: test de studie ((a filosofia) or (e filosofica)) y literatura*.