Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
letteratura fra » letteratura da, letteratura greca, letteratura arte
de letteratura » e letteratura, di letteratura, de litteratura
libri x » libri xv, libri sex, libri xii
i grani » i grandi, dei grani, de grani
i grand » 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: (( _ amandi ((libri x) OR (libri v)) letteratura fra ) OR ( ((i grani) OR (i grand)) libro de letteratura sarda ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( _ amandi ((libri x) or (libri v)) letteratura fra ) or ( ((i grani) OR (i grand)) libro de letteratura sarda ))*".