Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified game estimation algorithmss" » "modified game estimation algorithms", "modified game estimation algorithm", "modified pose estimation algorithmss", "modified game optimization algorithmss", "modified male estimation algorithmss", "modified adam estimation algorithmss"

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