Perhaps you should try some spelling variations:
"modified write optimization algorithms" » "modified write optimisation algorithm", "modified write estimation algorithm", "modified write optimized algorithms", "modified game optimization algorithms", "modified qoe optimization algorithms", "modified stage optimization algorithms"
"modified stochastic estimation algorithms" » "modified stochastic optimization algorithms", "modified stochastic estimation algorithm", "modified stochastic optimisation algorithm", "modified stochastic approximation algorithms"

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