Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
reduction techniques » reduction technique
anodes reduction » model reduction, closed reduction
based sensor » gas sensor, based sers
based anodes » based anode, based code

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 sensor imputation techniques ) or ( learning-based anodes reduction techniques ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based sensor imputation techniques ) OR ( learning-based anodes reduction techniques )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based sensor imputation techniques ) or ( learning-based anodes reduction techniques ))*.