Perhaps you should try some spelling variations:
literatura historia » literature history
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
della literatura » della letteratura, pela literatura, nella letteratura
libri della » libro della, libri dalla, libri nella
_ grounde » _ grounded, _ ground, _ grounds
i ground » i group, i groups, 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 ground ((libro del) OR (libro de)) letteratura sarda ) OR ( _ grounde libri della literatura historia ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i ground ((libro del) OR (libro de)) letteratura sarda ) or ( _ grounde libri della literatura historia ))*".