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

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 floatation technique"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based 3D implantation technique\") OR (\"learning-based 3D floatation technique\"))".
• Removing quotes may allow a broader search: (( learning-based 3D implantation technique ) OR ( learning-based 3D floatation technique )).
• Adding a wildcard symbol may retrieve word variants: (("learning-based 3D implantation technique") OR ("learning-based 3D floatation technique"))*.