Perhaps you should try some spelling variations:
"modified adam approximation algorithm" » "modified adam approximation algorithms", "modified _ approximation algorithm", "modified one approximation algorithm", "modified time approximation algorithm", "modified df approximation algorithm", "modified near approximation algorithm"
"modified bayesian optimization algorithm" » "modified bayesian optimization algorithms", "modified bayesian optimisation algorithm", "modified bayesian estimation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified adam approximation algorithm") OR ("modified bayesian optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adam approximation algorithm\") OR (\"modified bayesian optimization algorithm\"))*".
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