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

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified multiobjective estimation algorithms") OR ("modified sphere estimation algorithmss"))~.
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