Perhaps you should try some spelling variations:
space studien » space studies, spaces studied, space student
ii literatur » vi literatur, viii literatur
tests space » test space, texts space, lists space
a filosofia » la filosofia, di filosofia
e filosofia » la filosofia

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: tests space studien ((a filosofia) OR (e filosofia)) ii literatur*.