Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
sex letteratura » e letteratura, su letteratura, sua letteratura
la litterature » a literature
la literatura » a literature
i grund » i grunde, i ground, i grand
i gran » i grand, i grain, i grani

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 sex letteratura sarda ) OR ( i gran libro ((la literatura) OR (la litterature)) storia ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libri sex letteratura sarda ) or ( i gran libro ((la literatura) OR (la litterature)) storia ))*".