Perhaps you should try some spelling variations:
la literature » la litterature, a literature, la literatura
slate studio » safe studio, state studies, state studied
de filosofia » e filosofia, di filosofia, a filosofia
tests slate » tests safe, tests scale, tests space

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 slate studio ((de filosofia) OR (la filosofia)) la literature.
• Adding a wildcard symbol may retrieve word variants: tests slate studio ((de filosofia) or (la filosofia)) la literature*.