Perhaps you should try some spelling variations:
"learning-based novel implantation techniques" » "learning-based novel implantation technique", "learning-based novel imputation techniques", "learning-based novel augmentation techniques", "learning-based anodes implantation techniques"
"learning-based k inhaler technique" » "learning-based k inhalation technique", "learning-based _ inhaler technique", "learning-based n inhaler technique", "learning-based 3d inhaler technique"

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 novel implantation techniques") or ("learning-based k inhaler technique"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("learning-based novel implantation techniques") OR ("learning-based k inhaler technique"))*.
• Removing quotes may allow a broader search: (( learning-based novel implantation techniques ) or ( learning-based k inhaler technique ))*.