Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
de letteratura » e letteratura, di letteratura, de litteratura
grunde libre » grunde liegen, grunde die, france libre
i literatura » ii literatura, y literatura, a literatura
i literature » ii literature
libre de » 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 grunde libre de letteratura sarda ) OR ( i grand livre ((i literatura) OR (i literature)) de )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grunde libre de letteratura sarda ) or ( i grand livre ((i literatura) OR (i literature)) de ))".
• Adding a wildcard symbol may retrieve word variants: (( i grunde libre de letteratura sarda ) or ( i grand livre ((i literatura) OR (i literature)) de ))*.