Perhaps you should try some spelling variations:
de letteratura » di letteratura, de litteratura, de litterature
letteratura di » literatura de
e letteratura » y literatura, e literatur
grand libro » gran libro
i grundei » i grunde, i grund
libri de » libro de, libre de, libri duo

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