Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
land letteratura » la letteratura, land literatur, una letteratura
letteratura da » letteratura del, letteratura fra, letteratura e
letteratura di » letteratura e, literatura de
grundlage die » grundlagen die, grundlage der, grundlage des
grund libro » gran libro, und libro
i grundlage » i grundlagen, ii grundlage, 1 grundlage
die land » die lander, die lange
i grund » i grunde, 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 grundlage die land 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 grundlage die land letteratura sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grund libro de ((letteratura da) OR (letteratura di)) ) or ( i grundlage die land letteratura sarda ))*.