Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
de letteratura » e letteratura, de litteratura, de litterature
di letteratura » e letteratura, de literatura, della letteratura
la letteratura » la litterature, la literatura, e letteratura
grundlage die » grundlagen die, grundlage der, grundlage des
grund libro » gran libro, und libro
grunde die » grunde der, grunde des, grundung die
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) OR (di letteratura)) fra ) OR ( i ((grunde die) OR (grundlage die)) la letteratura sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libro ((de letteratura) or (di letteratura)) fra ) or ( i ((grunde die) OR (grundlage die)) la letteratura sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grund libro ((de letteratura) or (di letteratura)) fra ) or ( i ((grunde die) OR (grundlage die)) la letteratura sarda ))*.