Perhaps you should try some spelling variations:
di letteratura » de literatura, della letteratura
di literatura » de literatura, da literatura, ii literatura
literatura en » literatura y
e letteratura » y literatura, e literatur
gran libri » gran libro
libri di » libri ii, libri de, libri duo
i grand » i grunde
i gran » i grain, i grani, i gram

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: (( i gran libri di literatura en ) OR ( i grand livre ((di letteratura) OR (e letteratura)) sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i gran libri di literatura en ) or ( i grand livre ((di letteratura) OR (e letteratura)) sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i gran libri di literatura en ) or ( i grand livre ((di letteratura) OR (e letteratura)) sarda ))*.