Perhaps you should try some spelling variations:
literature author » literature arts
letteratura arti » letteratura arte, letteratura sarda, letteratura di
de literature » de litterature, de lite'rature, de literatura
e letteratura » y literatura, e literatur
mari libero » maria libera, maris liberi, mare liberum
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 gran libro de literature author ) OR ( i ((grani libero) OR (mari libero)) e letteratura arti )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i gran libro de literature author ) or ( i ((grani libero) OR (mari libero)) e letteratura arti ))".
• Adding a wildcard symbol may retrieve word variants: (( i gran libro de literature author ) or ( i ((grani libero) OR (mari libero)) e letteratura arti ))*.