Perhaps you should try some spelling variations:
litterature author » literature author, literature authors, temperature author
grundede liberte » grande liberte
sua letteratura » la letteratura, tra letteratura, una letteratura
su letteratura » uso letteratura, e letteratura, di letteratura
i litterature » i litteraturen, i literature, _ litterature
grunde livre » grande livre, grand livre, grunde liegen
i grundede » i grundidee, i grundideen
livre i » livro i, livre 1, livre qui

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 grunde livre i litterature author ) OR ( i grundede liberte ((sua letteratura) OR (su letteratura)) arte )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grunde livre i litterature author ) or ( i grundede liberte ((sua letteratura) OR (su letteratura)) arte ))".
• Adding a wildcard symbol may retrieve word variants: (( i grunde livre i litterature author ) or ( i grundede liberte ((sua letteratura) OR (su letteratura)) arte ))*.