Perhaps you should try some spelling variations:
safe studien » aue studien, safe studio, safety studies
ii literatur » vi literatur, viii literatur
a filosofia » la filosofia, di filosofia
e filosofia » la filosofia
tests safe » tests safety, tests scale, tests space

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tests safe studien ((a filosofia) OR (e filosofia)) ii literatur*".