Perhaps you should try some spelling variations:
litterature sarda » letteratura sarda, litterature par, litterature serbe
literatura graeca » literatura alema, literatura oral
i literatura » ii literatura, y literatura, i literature
grund libro » gran libro, und libro
der laan » der lage
i grund » i ground, i grand
libro i » libro di, libro de
der la » der lag, der lage

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 grund libro i literatura graeca ) OR ( i grunde ((der la) OR (der laan)) litterature sarda )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libro i literatura graeca ) or ( i grunde ((der la) OR (der laan)) litterature sarda ))".
• Adding a wildcard symbol may retrieve word variants: (( i grund libro i literatura graeca ) or ( i grunde ((der la) OR (der laan)) litterature sarda ))*.