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

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified bayesian optimization algorithm") OR ("modified response optimization algorithmss"))~.
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