Perhaps you should try some spelling variations:
"learning-based novel implantation technique" » "learning-based novel imputation techniques", "learning-based novel floatation technique", "learning-based novel inhalation technique", "learning-based anodes implantation technique", "learning-based _ovel implantation technique", "learning-based kovel implantation technique", "learning-based no2ovel implantation technique"
"learning-based n inhaler technique" » "learning-based n inhalation technique", "learning-based _ inhaler technique", "learning-based k inhaler technique", "learning-based no2 inhaler 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 n inhaler technique") OR ("learning-based novel implantation technique"))~.
• Removing quotes may allow a broader search: (( learning-based n inhaler technique ) or ( learning-based novel implantation technique ))~.
• Adding a wildcard symbol may retrieve word variants: (("learning-based n inhaler technique") or ("learning-based novel implantation technique"))*.