Perhaps you should try some spelling variations:
"modified adaptive optimisation algorithms" » "modified adaptive optimization algorithms", "modified adaptive estimation algorithms", "modified adaptive estimation algorithm", "modified adaptive optimization algorithmss", "modified adaptive estimation algorithmss", "modified passive optimisation algorithms"
"modified stochastic optimisation algorithm" » "modified stochastic optimization algorithm", "modified static optimization algorithm", "modified stochastic configuration algorithm", "modified stochastic optimization algorithms", "modified stochastic estimation algorithm", "modified stochastic estimation algorithms"

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