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

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