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

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