Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arti
letteratura arte » letteratura arti, letteratura e, letteratura fra
literatura de » literatura y, literatura en
i grundei » i grunde, i grund
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 grundei libro de ((letteratura sarda) OR (letteratura arte)) ) OR ( i gran libro _ literatura de )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grundei libro de ((letteratura sarda) OR (letteratura arte)) ) or ( i gran libro _ literatura de ))".
• Adding a wildcard symbol may retrieve word variants: (( i grundei libro de ((letteratura sarda) OR (letteratura arte)) ) or ( i gran libro _ literatura de ))*.