Perhaps you should try some spelling variations:
2e literature » e literature, ce literature, age literature
filosofia 2e » filosofia de, filosofia e, filosofia le
tests scale » tests stable, sets scale, tests safe
tests space » test space, texts space, lists space
e filosofia » la filosofia
studien e » studien es, studien _, studien 3

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 scale) OR (tests space)) studien e filosofia 2e literature*.