Perhaps you should try some spelling variations:
delta letteratura » della letteratura, nella letteratura, diventa letteratura
letteratura arte » letteratura arti, letteratura sarda, letteratura e
letteratura di » letteratura e, literatura de
grundes livre » grande livre, grand livre, grands livres
grunde air » grunde fir, grunde fur, grunde der
air delta » pair delta, achr delta, a delta
i grundes » i grund, i grounds, i grades

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 air delta letteratura di ) OR ( i grundes livre _ letteratura arte )).
• Adding a wildcard symbol may retrieve word variants: (( i grunde air delta letteratura di ) or ( i grundes livre _ letteratura arte ))*.