Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
letteratura greca » literatura graeca, letteratura fra, literatura grega
die land » die lander, die lange
libro e » libero e, libro i, libro _
die la » die lan, die lage, die lamb
i und » _ und, 1 und, 2 und

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