Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
di letteratura » e letteratura, de literatura, della letteratura
di literatura » de literatura, da literatura, ii literatura
literatura de » literatura y, literatura en
grand libro » grand livre
i ground » i groups, i grunde, i grand
libri di » libri ii, libri de, libri duo

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