Perhaps you should try some spelling variations:
filosofia prose » filosofia nuove, filosofia crista, filosofia morale
der filosofia » de filosofia, e filosofia, di filosofia
allo studio » lo studio
studio der » studio oder, studio del, studio dei

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: "(tesi OR temi) allo studio der filosofia prose literature*".