Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
space studied » spaces studied, space studies, state studied
di filosofia » la filosofia, e filosofia
d filosofia » de filosofia, da filosofia, e filosofia
test space » cost space, dust space, fast 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: "test space studied ((d filosofia) OR (di filosofia)) da literatura*".