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

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