Perhaps you should try some spelling variations:
letteratura sulla » letteratura russa, letteratura del
de letteratura » di letteratura, de litteratura, de litterature
grunde general » grande general, guide general, grade general
letteratura di » letteratura e, literatura de
e letteratura » y literatura, e literatur
grain libro » gran libro, grain fibril
general e » general et, general en
i grain » ii grain

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 grain libro de letteratura sulla ) OR ( i grunde general e letteratura di )).
• Adding a wildcard symbol may retrieve word variants: (( i grain libro de letteratura sulla ) or ( i grunde general e letteratura di ))*.