Perhaps you should try some spelling variations:
letteratura sulla » letteratura russa, letteratura del
y literatura » la literatura
libri ii » libri iii, libri v, libri xv
libri iv » libri v
libro y » libro i, libro _, libro e
i gran » i grand, i grain, i grani

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 grunde ((libri ii) OR (libri iv)) letteratura sulla ) OR ( i gran libro y literatura y )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grunde ((libri ii) OR (libri iv)) letteratura sulla ) or ( i gran libro y literatura y ))".
• Adding a wildcard symbol may retrieve word variants: (( i grunde ((libri ii) OR (libri iv)) letteratura sulla ) or ( i gran libro y literatura y ))*.