Perhaps you should try some spelling variations:
"modified coverage approximation algorithms" » "modified average approximation algorithms"
"modified near classification algorithm" » "modified a classification algorithm", "modified gas classification algorithm", "modified binary classification algorithm", "modified seird classification algorithm", "modified adam classification algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified near classification algorithm") or ("modified coverage approximation algorithms"))~.
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