Perhaps you should try some spelling variations:
della letteratura » e letteratura
nella letteratura » e letteratura
letteratura fra » letteratura da, letteratura greca, letteratura sarda
generali del » generale del, generali e, generali per
general del » general de, general des, general data
i grani » i grandi, i grand, dei grani
i gran » i grand, i grain, 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 libro ((della letteratura) OR (nella letteratura)) arti ) OR ( i grani ((general del) OR (generali del)) letteratura fra ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i gran libro ((della letteratura) OR (nella letteratura)) arti ) or ( i grani ((general del) or (generali del)) letteratura fra ))*".