Perhaps you should try some spelling variations:
"modified bayesian optimisation algorithm" » "modified bayesian optimization algorithms", "modified bayesian estimation algorithm", "modified bayesian estimation algorithms", "modified bayesian optimization algorithm"
"modified learning methods algorithm" » "mobile learning methods algorithm", "modified caging methods algorithm", "modified nursing methods algorithm"

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