Perhaps you should try some spelling variations:
nella letteratura » e letteratura
della letteratura » e letteratura
letteratura arti » letteratura arte, letteratura sarda, letteratura di
de letteratura » e letteratura, di letteratura, de litteratura
grunde piece » grunde liegen, grunde die, pound piece
i grundei » 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 arti ) OR ( i grunde piece ((della letteratura) OR (nella letteratura)) sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grundei libri de letteratura arti ) or ( i grunde piece ((della letteratura) OR (nella letteratura)) sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grundei libri de letteratura arti ) or ( i grunde piece ((della letteratura) OR (nella letteratura)) sarda ))*.