Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
lage letteratura » la letteratura, le letterature, lingue letterature
de letteratura » di letteratura, de litteratura, de litterature
e letteratura » y literatura, e literatur
grain libro » gran libro, grain fibril
grunde die » grunde der, grunde des, grundlage die
i grain » ii grain

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 grain libro ((de letteratura) OR (e letteratura)) fra ) OR ( i grunde die lage letteratura sarda ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grain libro ((de letteratura) OR (e letteratura)) fra ) or ( i grunde die lage letteratura sarda ))*".