Perhaps you should try some spelling variations:
orientation techniques » augmentation techniques, segmentation techniques, mitigation techniques
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
tool orientation » _ orientation, ebsd orientation
n imputation » _ computation, _ reputation
based tool » based two
based n » based _, based k, based no2

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