Perhaps you should try some spelling variations:
letteratura sulla » letteratura russa, letteratura del
den letteratura » e letteratura, di letteratura, de litteratura
literatura de » literatura y, literatura en
grunde der » grund der, grundzuge der, grundlage der
livre ii » livres ii, livre iii, livro ii
der den » wider den
livre i » livro i, livre 1, livre qui

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 grunde der den letteratura sulla ) OR ( i grand ((livre ii) OR (livre i)) literatura de )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grunde der den letteratura sulla ) or ( i grand ((livre ii) OR (livre i)) literatura de ))".
• Adding a wildcard symbol may retrieve word variants: (( i grunde der den letteratura sulla ) or ( i grand ((livre ii) OR (livre i)) literatura de ))*.