Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
de letteratura » e letteratura, di letteratura, de litterature
de litteratura » de litterature, de literatura, e letteratura
la letteratura » la litterature, la literatura, e letteratura
grund libro » und libro
grunde des » grund des, grunde der, grundzuge des
des la » des lage, des 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) OR (gran libro)) ((de letteratura) OR (de litteratura)) fra ) OR ( i grunde des la letteratura sarda )).
• Adding a wildcard symbol may retrieve word variants: (( i ((grund libro) or (gran libro)) ((de letteratura) or (de litteratura)) fra ) or ( i grunde des la letteratura sarda ))*.