Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithms", "modified multiobjective estimation algorithmss"
"modified seird optimization algorithm" » "modified seird optimisation algorithm", "modified seird estimation algorithm", "modified seird estimation algorithms", "modified stage optimization algorithm", "modified network optimization algorithm", "modified near optimization algorithm"

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