Perhaps you should try some spelling variations:
"learning-based two floatation technique" » "learning-based two inhalation technique", "learning-based two implantation technique", "learning-based two imputation techniques", "learning-based _ floatation technique", "learning-based tool floatation technique", "learning-based co floatation technique"
"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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based k inhaler technique\") OR (\"learning-based two floatation technique\"))~".
• Removing quotes may allow a broader search: (( learning-based k inhaler technique ) OR ( learning-based two floatation technique ))~.
• Adding a wildcard symbol may retrieve word variants: (("learning-based k inhaler technique") OR ("learning-based two floatation technique"))*.