Perhaps you should try some spelling variations:
augmentation techniques » imputation techniques
segmentation techniques » imputation techniques
sensor segmentation » series segmentation, semantic segmentation
n augmentation » data augmentation
gas sensor » gas sensors
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-gas sensor segmentation techniques ) or ( learning-based n augmentation techniques ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-gas sensor segmentation techniques ) OR ( learning-based n augmentation techniques )).
• Adding a wildcard symbol may retrieve word variants: (( learning-gas sensor segmentation techniques ) or ( learning-based n augmentation techniques ))*.