Perhaps you should try some spelling variations:
"lecture notes of the a matematica italian" » "lecture notes of the a matematica italiana", "lecture notes of the a matematica alla", "lecture notes of the a mathematical vitality", "lecture notes of the la matematica italian", "lecture notes of the e matematica italian", "lecture notes of the _ matematica italian"
"lecture notes of the a mathematica della" » "lecture notes of the a matematica della", "lecture notes of the a mathematical delay", "lecture notes of the a mathematica de", "lecture notes of the a mathematical della", "lecture notes of the _ mathematica della", "lecture notes of the a mathematics della"
"lecture notes of the a matematici della" » "lecture notes of the a matematici per", "lecture notes of the a matematica da", "lecture notes of the i matematici della", "lecture notes of the a mathematics della", "lecture notes of the la matematica della"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("lecture notes of the a matematica italian") OR ((("lecture notes of the a matematici della") OR ("lecture notes of the a mathematica della")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lecture notes of the a matematica italian\") or (((\"lecture notes of the a matematici della\") OR (\"lecture notes of the a mathematica della\"))))".
• Removing quotes may allow a broader search: (( lecture notes of the a matematica italian ) or ((( lecture notes of the a matematici della ) OR ( lecture notes of the a mathematica della )))).
• Adding a wildcard symbol may retrieve word variants: (("lecture notes of the a matematica italian") or ((("lecture notes of the a matematici della") OR ("lecture notes of the a mathematica della"))))*.