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

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 a imputation techniques") OR ("learning-based a segmentation techniques"))~.
• Removing quotes may allow a broader search: (( learning-based a imputation techniques ) or ( learning-based a segmentation techniques ))~.
• Adding a wildcard symbol may retrieve word variants: (("learning-based a imputation techniques") or ("learning-based a segmentation techniques"))*.