Perhaps you should try some spelling variations:
letteratura sulla » letteratura russa, letteratura del
e letteratura » y literatura, e literatur
de literatura » de litterature, y literatura, a literatura
la literatura » la litterature, a literature
grunde libro » grunde fir, grunde gibt, und libro
i grundei » i grund
libri e » libri de, libri v, libri x

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 grundei libri e letteratura sulla ) OR ( i grunde libro ((de literatura) OR (la literatura)) y )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grundei libri e letteratura sulla ) or ( i grunde libro ((de literatura) OR (la literatura)) y ))".
• Adding a wildcard symbol may retrieve word variants: (( i grundei libri e letteratura sulla ) or ( i grunde libro ((de literatura) OR (la literatura)) y ))*.