Perhaps you should try some spelling variations:
"modified notion optimization algorithms" » "modified notion optimisation algorithm", "modified notion estimation algorithm", "modified notion optimized algorithms", "modified network optimization algorithms", "modified policy optimization algorithms", "modified allocation optimization algorithms"
"modified seird estimation algorithms" » "modified seird estimation algorithm", "modified seird optimisation algorithm", "modified seird approximation algorithms", "modified sphere estimation algorithms", "modified risk estimation algorithms", "modified near estimation algorithms"

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