Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified motion optimization algorithmss" » "modified motion optimization algorithms", "modified motion optimisation algorithm", "modified motion estimation algorithm", "modified motion estimation algorithmss", "modified policy optimization algorithmss", "modified allocation optimization algorithmss"

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