Perhaps you should try some spelling variations:
segmentation techniques » augmentation techniques, imputation techniques
floatation technique » inhalation technique, implantation technique, imputation techniques
sensor segmentation » series segmentation, semantic segmentation
based code » based anode
gas sensor » gas sensors

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• Performing a fuzzy search may retrieve terms with similar spellings: (( learning-based code floatation technique ) or ( learning-gas sensor segmentation techniques ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based code floatation technique ) OR ( learning-gas sensor segmentation techniques )).
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