Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
section techniques » reduction techniques, reduction technique, vision techniques
mri imputation » mri simulation
code section » cross section, code region
based code » based anode
based mri » based mil

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 mri imputation techniques ) OR ( learning-based code section techniques ))~.
• Adding a wildcard symbol may retrieve word variants: (( learning-based mri imputation techniques ) or ( learning-based code section techniques ))*.