Perhaps you should try some spelling variations:
"learning-based two floatation technique" » "learning-based two implantation technique", "learning-based two imputation techniques", "learning-based two truncation technique", "learning-based _ floatation technique", "learning-based tool floatation technique", "learning-based co floatation technique"
"learning-based k inhalation technique" » "learning-based k implantation technique", "learning-based k imputation techniques", "learning-based k inhaler technique", "learning-based _ inhalation technique", "learning-based k inflation technique", "learning-based _ inflation technique", "learning-based n inhalation technique", "learning-based 3d inhalation 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 k inhalation technique") OR ("learning-based two floatation technique"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based k inhalation technique\") OR (\"learning-based two floatation technique\"))*".
• Removing quotes may allow a broader search: (( learning-based k inhalation technique ) OR ( learning-based two floatation technique ))*.