Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
di letteratura » e letteratura, de literatura, della letteratura
i literatura » ii literatura, i literature, a literatura
y literatura » la literatura
grand libro » gran libro, grand livre
libri di » libri ii, libri de, libri duo
i grund » i grunde, i ground
i grand » i grunde

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 grund libri di letteratura sarda ) OR ( i grand libro ((i literatura) OR (y literatura)) de )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libri di letteratura sarda ) or ( i grand libro ((i literatura) OR (y literatura)) de ))".
• Adding a wildcard symbol may retrieve word variants: (( i grund libri di letteratura sarda ) or ( i grand libro ((i literatura) OR (y literatura)) de ))*.