Perhaps you should try some spelling variations:
lage letteratura » la letteratura, e letteratura, lingue letterature
de letteratura » e letteratura, di letteratura, de litteratura
letteratura da » letteratura di, letteratura del, letteratura fra
le letterature » e letterature, la litterature, 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 da ) OR ( i ((grunde die) OR (grundlage die)) ((lage letteratura) OR (le letterature)) sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libro de letteratura da ) or ( i ((grunde die) or (grundlage die)) ((lage letteratura) OR (le letterature)) sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grund libro de letteratura da ) or ( i ((grunde die) or (grundlage die)) ((lage letteratura) OR (le letterature)) sarda ))*.