Perhaps you should try some spelling variations:
der filosofica » de filosofia, e filosofica, di filosofia
sals studies » goals studies, gels studies, aes studies
a literatura » la literatura, a literature, y literatura
e filosofia » la filosofia
test sals » test saas, test shall, test small

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 sals studies ((der filosofica) OR (e filosofia)) a literatura".
• Adding a wildcard symbol may retrieve word variants: test sals studies ((der filosofica) OR (e filosofia)) a literatura*.