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

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 _ literatura graeca ) OR ( i grunde der la litterature sarda )).
• Adding a wildcard symbol may retrieve word variants: (( i grund libro _ literatura graeca ) or ( i grunde der la litterature sarda ))*.