Perhaps you should try some spelling variations:
literatura graeca » literatura alema, literatura oral
literature sarda » literature search, letteratura sarda, literature sacred
grunde fir » grunde fur, grunde der, grunde die
libero e » libera me, liber de, liber _
i grund » i ground, i grand
libro e » libro de, libro i, libro _
fir a » rfir a, fit a, fir _

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