Perhaps you should try some spelling variations:
della letteratura » nella letteratura, e letteratura
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
ground libro » ground air, ground links, ground link
i literatura » ii literatura, y literatura, i literature
libro della » libro del, piero della
grand libro » gran libro, grand livre
i ground » i group, i groups, i grunde
i grand » i grunde
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 ground libro della letteratura sarda ) OR ( i grand libro i literatura y )).
• Adding a wildcard symbol may retrieve word variants: (( i ground libro della letteratura sarda ) or ( i grand libro i literatura y ))*.