Perhaps you should try some spelling variations:
"modified parameters estimation algorithmsss" » "modified parameters estimation algorithm", "modified parameters estimation algorithmss", "modified parameters optimization algorithmsss", "modified parameters optimisation algorithmss", "modified parameter estimation algorithmsss", "modified parameter estimates algorithmsss", "modified parameter optimization algorithmsss"
"modified objective estimation algorithms" » "modified objective estimation algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective allocation algorithms"

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