Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
de letteratura » e letteratura, de litteratura, de litterature
di letteratura » e letteratura, de literatura, della letteratura
la letteratura » la litterature, la literatura, e letteratura
grund libro » gran libro, und libro
grunde die » grunde der, grunde des, grundlage die
i grund » 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) OR (di letteratura)) fra ) OR ( i grunde die la letteratura sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libro ((de letteratura) OR (di letteratura)) fra ) or ( i grunde die la letteratura sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grund libro ((de letteratura) OR (di letteratura)) fra ) or ( i grunde die la letteratura sarda ))*.