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

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