Perhaps you should try some spelling variations:
duo litterature » de litterature, des litteratures, leur litterature
i literatura » ii literatura, y literatura, i literature
i grundei » i grunde, i grund
libro i » libro di, libro de
i gran » i grand, i grain, i grani

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 grundei libri duo litterature russe ) OR ( i gran libro i literatura y )).
• Adding a wildcard symbol may retrieve word variants: (( i grundei libri duo litterature russe ) or ( i gran libro i literatura y ))*.