Perhaps you should try some spelling variations:
"modified optimal optimization algorithmss" » "modified optimal optimisation algorithm", "modified optimal estimation algorithms", "modified optimal estimation algorithm", "modified optimal optimisation algorithms", "modified optimal estimation algorithmss", "modified geometrical optimization algorithmss", "modified global optimization algorithmss", "modified thermal optimization algorithmss"
"modified objective optimization algorithms" » "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified objective estimation algorithm", "modified multiobjective optimization algorithms"

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