Perhaps you should try some spelling variations:
"i grunde livre e letteratura sarda" » "i grunde livre e letteratura storia", "i grunde livre e letteratura sulla", "i grunde livre e letteratura arte", "i grunde livre y literatura sarda", "i grunde livre e literatur sarda", "i grande livre e letteratura sarda", "i grand livre e letteratura sarda", "i grunde liegen e letteratura sarda", "i grunde livre de letteratura sarda", "i grunde livre en letteratura sarda", "i grunde livre et letteratura sarda"
"i gram libro de literatura de" » "i gram libro de litterature de", "i gram libro la literatura de", "i gram libro y literatura de", "i gram libro de literatura en", "i gran libro de literatura de", "bi gram libro de literatura de"
"i gram libro de literatura y" » "i gram libro de litterature y", "i gram libro la literatura y", "i gram libro y literatura y", "i gran libro de literatura y", "bi gram libro de literatura y"

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 gram libro de literatura de") OR ("i gram libro de literatura y"))) OR ("i grunde livre e letteratura sarda")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"i gram libro de literatura de\") OR (\"i gram libro de literatura y\"))) or (\"i grunde livre e letteratura sarda\"))".
• Removing quotes may allow a broader search: (((( i gram libro de literatura de ) OR ( i gram libro de literatura y ))) or ( i grunde livre e letteratura sarda )).
• Adding a wildcard symbol may retrieve word variants: (((("i gram libro de literatura de") OR ("i gram libro de literatura y"))) or ("i grunde livre e letteratura sarda"))*.