Perhaps you should try some spelling variations:
"lecture notes of the functions mathematical della" » "lecture notes of the equations mathematical della", "lecture notes of the applications mathematical della", "lecture notes of the functions mathematical cell", "lecture notes of the functions mathematical delay", "lecture notes of the functions mathematical data"
"lecture notes of the munari matematica della" » "lecture notes of the rari matematica della", "lecture notes of the una matematica della", "lecture notes of the muranesi matematica della", "lecture notes of the munari matematici della", "lecture notes of the munari matematica nella", "lecture notes of the munari matematiche dalla"
"lecture notes of the tra matematica della" » "lecture notes of the tra matematici della", "lecture notes of the tra matematica nella", "lecture notes of the tra matematiche dalla", "lecture notes of the la matematica della", "lecture notes of the a mathematica della", "lecture notes of the e matematica della"

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