Perhaps you should try some spelling variations:
letteratura italian » letteratura italiana, literature italian, litteratur italien
letteratura storia » letterature storie, literatura historia, litteratur historia
letteratura sarda » letteratura sulla, letteratura arte, letteratura arti
del letteratura » della letteratura, e letteratura, di letteratura
ground libro » ground links, ground link, und libro
libri della » libro della, libri dalla, libri nella
ground air » ground a
i grounde » i grunde, i ground, i grounds

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 ((ground libro) OR (ground air)) del letteratura sarda ) OR ( i grounde libri della ((letteratura storia) OR (letteratura italian)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i ((ground libro) OR (ground air)) del letteratura sarda ) or ( i grounde libri della ((letteratura storia) or (letteratura italian)) ))".
• Adding a wildcard symbol may retrieve word variants: (( i ((ground libro) OR (ground air)) del letteratura sarda ) or ( i grounde libri della ((letteratura storia) or (letteratura italian)) ))*.