Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
literatur greca » literatura graeca, literatura grega, literaturas grecia
und librosa » und fibrose
und libro » un libro, und lido
die land » die lander, die lange
die la » die lan, die lage, die lamb

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) OR (und librosa)) e literatur 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) OR (und librosa)) e literatur greca ) or ( i grunde ((die la) or (die land)) letteratura sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i ((und libro) OR (und librosa)) e literatur greca ) or ( i grunde ((die la) or (die land)) letteratura sarda ))*.