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

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