Perhaps you should try some spelling variations:
augmentation techniques » segmentation techniques, imputation techniques
reduction techniques » reduction technique, imputation techniques
data augmentation » image augmentation
n reduction » _ reduction, _ prediction, _ production
based n » based _, based k, based no2

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( learning-based data augmentation techniques ) or ( learning-based n reduction techniques ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based data augmentation techniques ) OR ( learning-based n reduction techniques )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based data augmentation techniques ) or ( learning-based n reduction techniques ))*.