Perhaps you should try some spelling variations:
litterature sarda » letteratura sarda, litterature par, litterature serbe
de letteratura » e letteratura, di letteratura, de litteratura
letteratura da » letteratura di, letteratura del, letteratura fra
la litterature » a literature
grundlage die » grundlagen die, grundlage der, grundlage des
grund libro » gran libro, und libro
i grundlage » i grundlagen, ii grundlage, 1 grundlage
i grund » i grunde, i ground, i grand
die la » die lan, die lage, die 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 grund libro de letteratura da ) OR ( i grundlage die la litterature sarda )).
• Adding a wildcard symbol may retrieve word variants: (( i grund libro de letteratura da ) or ( i grundlage die la litterature sarda ))*.