Perhaps you should try some spelling variations:
sfide matematica » sfide matematiche, de matematica, series matematica
matematica della » matematici della, matematica nella, matematiche dalla
matematici per » matematica e
i matematici » i mathematics, di matematica, e matematica

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: (( lecture notes of the sfide matematica della ) OR ( lecture notes of the i matematici per )).
• Adding a wildcard symbol may retrieve word variants: (( lecture notes of the sfide matematica della ) or ( lecture notes of the i matematici per ))*.