Perhaps you should try some spelling variations:
der filosofia » de filosofia, e filosofia, di filosofia
allo studio » lo studio
filosofia e » filosofia de, filosofia del
e literatur » die literatur
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 e literatur*".