Perhaps you should try some spelling variations:
augmentation techniques » segmentation techniques, imputation techniques
sectional techniques » reduction techniques
two augmentation » data augmentation
closed sectional » cross sectional
based closed » based code, based cross
based two » based tool, based co

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• Performing a fuzzy search may retrieve terms with similar spellings: (( learning-based two augmentation techniques ) or ( learning-based closed sectional techniques ))~.
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