Perhaps you should try some spelling variations:
"learning-based 3d segmentation techniques" » "learning-based 3d imputation techniques", "learning-based _ segmentation techniques", "learning-based co segmentation techniques", "learning-based k segmentation techniques"
"learning-based 3D augmentation techniques" » "learning-based 3D imputation techniques"
3d augmentation » data augmentation

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 3d segmentation techniques") or ("learning-based 3D augmentation techniques"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("learning-based 3d segmentation techniques") OR ("learning-based 3D augmentation techniques"))*.
• Removing quotes may allow a broader search: (( learning-based 3d segmentation techniques ) or ( learning-based 3D augmentation techniques ))*.