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

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