Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
data studies » dna studies, data studio, area studies
de filosofia » e filosofia, di filosofia, la filosofia
a literatura » a literature, y literatura, a literatur
d filosofia » di filosofia, da filosofia, e filosofia

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 OR text) data studies ((d filosofia) OR (de filosofia)) ((a literatura) OR (la literatura))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(test or text) data studies ((d filosofia) OR (de filosofia)) ((a literatura) or (la literatura))*".