Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
scale studien » scale studies, scale student, duale studien
ds filosofia » de filosofia, da filosofia, la filosofia
di filosofia » la filosofia, e filosofia
test scale » tests scale, best scale, rest scale

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: test scale studien ((ds filosofia) OR (di filosofia)) le literatura.
• Adding a wildcard symbol may retrieve word variants: test scale studien ((ds filosofia) or (di filosofia)) le literatura*.