Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
lage letteratura » la letteratura, e letteratura, le letterature
letteratura da » letteratura del, letteratura fra, letteratura e
letteratura di » letteratura e, literatura de
grund libro » gran libro, und libro
grunde die » grunde der, grunde des, grundlage die
i grund » i ground, i grand

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