Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
literatur greca » literatura graeca, literatura grega, literaturas grecia
la letteratura » la litterature, la literatura, e letteratura
und librosa » und fibrose
grunde des » grund des, grunde der, grundzuge des
und libro » un libro, und lido
des la » des lage, des land

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