Perhaps you should try some spelling variations:
letteratura sarda » letteratura storia, letteratura sulla, letteratura arte
litterature sarda » litterature par, litterature serbe, literature search
la litterature » a literature
e letteratura » y literatura, e literatur
grundlage der » grundlagen der
grund libro » gran libro, und libro
grunde der » grund der, grundzuge der
i grund » i grunde, i ground, i grand
libro e » libro de, libero e, libro i

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 e letteratura sarda ) OR ( i ((grunde der) OR (grundlage der)) la litterature sarda ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grund libro e letteratura sarda ) or ( i ((grunde der) OR (grundlage der)) la litterature sarda ))*".