Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
novel imputation » novel implantation, novel indication
3d mitigation » _ mitigation, _ litigation
based novel » based anodes
based 3d » based _, based co, based k

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