Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
di letteratura » e letteratura, de literatura, della letteratura
literatura de » literatura y, literatura en
grunde libro » grunde fir, grunde gibt, und libro
i literatura » ii literatura, y literatura, i literature
i grundei » i grund
libre di » libre de, libre du, libri di
libro i » libro di, libro de

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 libre di letteratura sarda ) OR ( i grunde libro i literatura de )).
• Adding a wildcard symbol may retrieve word variants: (( i grundei libre di letteratura sarda ) or ( i grunde libro i literatura de ))*.