Perhaps you should try some spelling variations:
"learning-based co floatation technique" » "learning-based co implantation technique", "learning-based co imputation techniques", "learning-based co truncation technique", "learning-based _ floatation technique", "learning-based no2 floatation technique", "learning-based two floatation technique"
"learning-based code inhalation technique" » "learning-based code implantation technique", "learning-based code imputation techniques", "learning-based code inhaler technique", "learning-based anode inhalation technique", "learning-based no2de inhalation technique", "learning-based twode inhalation technique", "learning-based _de inhalation technique"

You may be able to get more results by adjusting your search query.

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