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

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