Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
land letteratura » la letteratura, land literatur, una letteratura
de letteratura » e letteratura, di letteratura, de litteratura
letteratura da » letteratura di, letteratura del, letteratura fra
grund libro » und libro
grunde die » grunde der, grunde des, grundlage die
die land » die lander, die lange

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) OR (gran libro)) de letteratura da ) OR ( i grunde die land letteratura sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i ((grund libro) OR (gran libro)) de letteratura da ) or ( i grunde die land letteratura sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i ((grund libro) OR (gran libro)) de letteratura da ) or ( i grunde die land letteratura sarda ))*.