Perhaps you should try some spelling variations:
implantation technique » imputation techniques, inhalation technique
floatation technique » inhalation technique, imputation techniques, truncation technique
n implantation » novel implantation, _ implementation
no2 floatation » _ floatation
based no2 » based co
based n » based _, based k, based 3d

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 n implantation technique ) OR ( learning-based no2 floatation technique ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based n implantation technique ) OR ( learning-based no2 floatation technique ))".
• Adding a wildcard symbol may retrieve word variants: (( learning-based n implantation technique ) OR ( learning-based no2 floatation technique ))*.