Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified total estimation algorithmss" » "modified total estimation algorithms", "modified total estimation algorithm", "modified motion estimation algorithmss", "modified pose estimation algorithmss", "modified total variation algorithmss", "modified thermal estimation algorithmss", "modified ti6al4v estimation algorithmss"

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