Perhaps you should try some spelling variations:
augmentation techniques » imputation techniques
segmentation techniques » imputation techniques
data segmentation » data augmentation, shape segmentation, 3d segmentation
no2 augmentation » data augmentation
based no2 » based co, based n

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• Performing a fuzzy search may retrieve terms with similar spellings: (( learning-based no2 augmentation techniques ) or ( learning-based data segmentation techniques ))~.
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