Perhaps you should try some spelling variations:
"lecture notes of the a mathematical vitalitya" » "lecture notes of the a mathematical reality", "lecture notes of the a mathematical utility", "lecture notes of the a mathematical activity", "lecture notes of the a mathematical realitya", "lecture notes of the a mathematical utilitya", "lecture notes of the a mathematical activitya"
"lecture notes of the a mathematical vitality" » "lecture notes of the a mathematical reality", "lecture notes of the a mathematical utility", "lecture notes of the a mathematical activity"
"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 mathematica italian", "lecture notes of the la matematica italian", "lecture notes of the e matematica italian"

Try widening your search to All Fields.

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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 mathematical vitality"))) OR ("lecture notes of the a mathematical vitalitya")).
• 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 mathematical vitality\"))) or (\"lecture notes of the a mathematical vitalitya\"))".
• Removing quotes may allow a broader search: (((( lecture notes of the a matematica italian ) OR ( lecture notes of the a mathematical vitality ))) or ( lecture notes of the a mathematical vitalitya )).
• Adding a wildcard symbol may retrieve word variants: (((("lecture notes of the a matematica italian") OR ("lecture notes of the a mathematical vitality"))) or ("lecture notes of the a mathematical vitalitya"))*.