Perhaps you should try some spelling variations:
"i grain libro della letteratura e" » "i grain libro nella letteratura e", "i grain libro e letteratura e", "i gran libro della letteratura e", "i grain fibril della letteratura e", "i grain libro del letteratura e", "i grain piero della letteratura e", "ii grain libro della letteratura e"
"i grant general et litterature da" » "i grant general la litterature da", "i grant general art literature da", "i grant general et litterature de", "i grant general et litterature du", "i grant general et litterature des", "i grand general et litterature da", "i grande general et litterature da", "i great general et litterature da", "i graft general et litterature da", "i granito general et litterature da"
"i grani general et litterature da" » "i grani general la litterature da", "i grani general art literature da", "i grani general et litterature de", "i grani general et litterature du", "i grani general et litterature des", "i grand general et litterature da", "i grande general et litterature da", "i gai general et litterature da", "i grandi general et litterature da", "dei grani general et litterature da"

Try widening your search to All Fields.

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 grain libro della letteratura e") OR ((("i grant general et litterature da") OR ("i grani general et litterature da")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"i grain libro della letteratura e\") or (((\"i grant general et litterature da\") OR (\"i grani general et litterature da\"))))".
• Removing quotes may allow a broader search: (( i grain libro della letteratura e ) or ((( i grant general et litterature da ) OR ( i grani general et litterature da )))).
• Adding a wildcard symbol may retrieve word variants: (("i grain libro della letteratura e") or ((("i grant general et litterature da") OR ("i grani general et litterature da"))))*.