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

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 implantation technique") OR ("learning-based 3d augmentation techniques"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based 3D implantation technique\") OR (\"learning-based 3d augmentation techniques\"))*".
• Removing quotes may allow a broader search: (( learning-based 3D implantation technique ) OR ( learning-based 3d augmentation techniques ))*.