Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
die filosofia » di filosofia, de filosofia, e filosofia
assets case » assets based, assets asset
studies die » studies does, studies dose, studies ds
sets case » sets based, sets can

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: "((sets case) OR (assets case)) studies die filosofia del literatura".
• Adding a wildcard symbol may retrieve word variants: ((sets case) OR (assets case)) studies die filosofia del literatura*.