Perhaps you should try some spelling variations:
letteratura arte » letteratura arti, letteratura sarda, letteratura e
de litterature » et litterature
la litterature » a literature
de letteratura » e letteratura, di letteratura, de litteratura
grani liber » glareani liber, romani liber
liber de » liberte de
i grani » i grandi, i grand, dei grani
i gran » i grand, i grain, i gram

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 gran libro ((de litterature) OR (la litterature)) author ) OR ( i grani liber de letteratura arte )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i gran libro ((de litterature) OR (la litterature)) author ) or ( i grani liber de letteratura arte ))".
• Adding a wildcard symbol may retrieve word variants: (( i gran libro ((de litterature) OR (la litterature)) author ) or ( i grani liber de letteratura arte ))*.