Perhaps you should try some spelling variations:
space studied » spaces studied, space studies, state studied
filosofica y » filosofia y, filosofica _, filosofica da
filosofica e » filosofia e, filosofica da, filosofia de
tests space » test space, texts space, lists space
studied die » studie die, studien die, studies die

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 studied die ((filosofica y) OR (filosofica e)) literatura*.