Perhaps you should try some spelling variations:
"modified bayesian optimisation algorithms" » "modified bayesian optimisation algorithm", "modified bayesian optimization algorithms", "modified bayesian estimation algorithm"
"modified parameters estimation algorithms" » "modified parameter estimation algorithms", "modified parameter estimates algorithms", "modified parameter optimization algorithms", "modified parameters estimation algorithm", "modified parameters optimization algorithms", "modified parameters optimisation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified bayesian optimisation algorithms") OR ("modified parameters estimation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified bayesian optimisation algorithms\") OR (\"modified parameters estimation algorithms\"))*".
• Removing quotes may allow a broader search: (( modified bayesian optimisation algorithms ) OR ( modified parameters estimation algorithms ))*.