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

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