Perhaps you should try some spelling variations:
litteratura sarda » letteratura sarda, letteratura storia, letteratura sulla
literatura del » literatura de, literatura el, letteratura del
e literatura » de literatura, y literatura, e literatur
i grundei » i grunde, i grund
libri de » libro de, libre de, libri sex
libro e » libro de, libero e, libro i
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 ((libri de) OR (libri duo)) litteratura sarda ) OR ( i gran libro e literatura del )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grundei ((libri de) OR (libri duo)) litteratura sarda ) or ( i gran libro e literatura del ))".
• Adding a wildcard symbol may retrieve word variants: (( i grundei ((libri de) OR (libri duo)) litteratura sarda ) or ( i gran libro e literatura del ))*.