Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
de letteratura » e letteratura, di letteratura, de litteratura
literatura de » literatura y
literatura en » literatura y
i grundei » i grund
libro e » libero e, libro i, libro _

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