Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
literatur greca » literatura graeca, literatura grega, literaturas grecia
e letteratura » y literatura
grunde die » grunde der, grunde des, grundlage die
libro e » libro de, libero e, libro i
i und » _ und, 2 und
1 und » _ und
die e » die _, die 7, die 5

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) OR (1 und)) libro e literatur greca ) OR ( i grunde die e letteratura sarda )).
• Adding a wildcard symbol may retrieve word variants: (( ((i und) or (1 und)) libro e literatur greca ) or ( i grunde die e letteratura sarda ))*.