Perhaps you should try some spelling variations:
letteratura del » letteratura e, literatura del, literatura de
de letteratura » e letteratura, di letteratura, de litteratura
letteratura di » letteratura e, literatura de
i grundei » i grunde, i grund
libre de » 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 libre de letteratura di ) OR ( i gran libro _ letteratura del )).
• Adding a wildcard symbol may retrieve word variants: (( i grundei libre de letteratura di ) or ( i gran libro _ letteratura del ))*.