Perhaps you should try some spelling variations:
"modified parameters estimation algorithmss" » "modified parameters estimation algorithm", "modified parameters optimization algorithms", "modified parameters estimation algorithms", "modified parameters optimization algorithmss", "modified parameters optimisation algorithms", "modified parameter estimation algorithmss", "modified parameter estimates algorithmss", "modified parameter optimization algorithmss"
"designed network estimation algorithms" » "designed network estimation algorithm", "designed network optimization algorithms", "designed network optimisation algorithm", "defined network estimation algorithms"

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