Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
reduction technique » reduction techniques, truncation technique
3dnode reduction » model reduction
n imputation » _ computation, _ reputation
based 3dnode » based anode, based code, based anodes
based n » based _, based k, based no2

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based n imputation techniques ) OR ( learning-based 3dnode reduction technique ))~.
• Adding a wildcard symbol may retrieve word variants: (( learning-based n imputation techniques ) or ( learning-based 3dnode reduction technique ))*.