Perhaps you should try some spelling variations:
die filosofica » di filosofia, de filosofia, e filosofica
filosofica e » filosofia e, filosofica da, filosofia de
e literatura » de literatura, y literatura, e literatur
tests space » test space, texts space, lists space
cost space » coset space, coset spaces
studie die » studie der

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) OR (cost space)) studie die filosofica e literatura.
• Adding a wildcard symbol may retrieve word variants: ((tests space) or (cost space)) studie die filosofica e literatura*.