Perhaps you should try some spelling variations:
"learning-based k segmentation techniques" » "learning-based k augmentation techniques", "learning-based 3d segmentation techniques", "learning-based _ segmentation techniques", "learning-based n segmentation techniques"
"learning-based k imputation techniques" » "learning-based k implantation technique", "learning-based k augmentation techniques", "learning-based k floatation technique", "learning-based _ computation techniques", "learning-based _ reputation techniques", "learning-based _ imputation techniques", "learning-based n imputation techniques", "learning-based 3d imputation techniques"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based k segmentation techniques\") OR (\"learning-based k imputation techniques\"))~".
• Removing quotes may allow a broader search: (( learning-based k segmentation techniques ) OR ( learning-based k imputation techniques ))~.
• Adding a wildcard symbol may retrieve word variants: (("learning-based k segmentation techniques") OR ("learning-based k imputation techniques"))*.