Perhaps you should try some spelling variations:
"modified response optimisation algorithmss" » "modified response optimization algorithms", "modified response estimation algorithms", "modified response estimation algorithm", "modified response optimization algorithmsss", "modified response estimation algorithmss", "modified response estimation algorithmsss", "modified response optimization algorithmss"
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation algorithms"

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