Perhaps you should try some spelling variations:
floatation technique » implantation technique, imputation techniques, truncation technique
inhalation technique » implantation technique, imputation techniques, inhaler technique
co floatation » _ floatation
based anodes » based anode, based code
based co » based code, based no2, based two

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 co floatation technique ) or ( learning-based anodes inhalation technique ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based co floatation technique ) OR ( learning-based anodes inhalation technique )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based co floatation technique ) or ( learning-based anodes inhalation technique ))*.