Perhaps you should try some spelling variations:
literatur greca » literatura graeca, literatura grega, literaturas grecia
la letteratura » la literatura, e letteratura, di letteratura
la litterature » a literature
grunde die » grunde der, grunde des, grundlage die
libro e » libro de, libero e, libro i
i und » _ und, 2 und
1 und » _ 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) OR (1 und)) libro e literatur greca ) OR ( i grunde die ((la letteratura) OR (la litterature)) sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((i und) or (1 und)) libro e literatur greca ) or ( i grunde die ((la letteratura) OR (la litterature)) sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( ((i und) or (1 und)) libro e literatur greca ) or ( i grunde die ((la letteratura) OR (la litterature)) sarda ))*.