Perhaps you should try some spelling variations:
litterature author » literature authors, literature anthony, temperature author
literature author » literature arts
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
du letteratura » di letteratura, su letteratura, sua letteratura
grand libro » gran libro, grand livre
i grandde » i grunde
i grandi » e grandi, i grani, dei grandi
i grand » i grunde
libro i » libro di, libro de

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 grand libro i ((litterature author) OR (literature author)) ) OR ( ((i grandde) OR (i grandi)) liberte du letteratura sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grand libro i ((litterature author) OR (literature author)) ) or ( ((i grandde) or (i grandi)) liberte du letteratura sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grand libro i ((litterature author) OR (literature author)) ) or ( ((i grandde) or (i grandi)) liberte du letteratura sarda ))*.