Perhaps you should try some spelling variations:
et litterature » la litterature, art literature
et letteratura » e letteratura, di letteratura, la letteratura
literatura de » literatura y, literatura en
libro di » libri di, libro del, libros de
i grand » i grunde
i gran » i grain, i grani, 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 di) OR (libro de)) literatura de ) OR ( i grand livre ((et letteratura) OR (et litterature)) sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i gran ((libro di) or (libro de)) literatura de ) or ( i grand livre ((et letteratura) OR (et litterature)) sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i gran ((libro di) or (libro de)) literatura de ) or ( i grand livre ((et letteratura) OR (et litterature)) sarda ))*.