Perhaps you should try some spelling variations:
"modified based prediction algorithm" » "modified based predation algorithm", "modified based predators algorithm", "modified risk prediction algorithm", "modified a prediction algorithm", "modified admet prediction algorithm", "modified male prediction algorithm"
"modified time approximation algorithms" » "modified one approximation algorithms", "modified _ approximation algorithms", "modified bi1 approximation algorithms", "modified male approximation algorithms"

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