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

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