Perhaps you should try some spelling variations:
letteratura del » letteratura e, literatura del, literatura de
letteratura di » letteratura e, literatura de
de letteratura » e letteratura, di letteratura, de litteratura
grand libro » gran libro, grand livre
i grund » i grunde, i ground
i grand » i grunde

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 libri _ letteratura di ) OR ( i grand libro de letteratura del )).
• Adding a wildcard symbol may retrieve word variants: (( i grund libri _ letteratura di ) or ( i grand libro de letteratura del ))*.