Perhaps you should try some spelling variations:
letteratura sulla » letteratura russa, letteratura del
den letteratura » e letteratura, di letteratura, de litteratura
ii literatura » ii literatur, iii literature, vii literature
ii literature » ii literatur, i literature, vii literatur
grunde der » grund der, grundzuge der, grundlage der
der den » wider den

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 grunde der den letteratura sulla ) OR ( i grand livre ((ii literatura) OR (ii literature)) de )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( i grunde der den letteratura sulla ) or ( i grand livre ((ii literatura) OR (ii literature)) de ))".
• Adding a wildcard symbol may retrieve word variants: (( i grunde der den letteratura sulla ) or ( i grand livre ((ii literatura) OR (ii literature)) de ))*.