Perhaps you should try some spelling variations:
"learning-based n implantation technique" » "learning-based n imputation techniques", "learning-based n inhalation technique", "learning-based novel implantation technique", "learning-based _ implementation technique", "learning-based _ implantation technique", "learning-based k implantation technique", "learning-based no2 implantation technique"
"learning-based n floatation technique" » "learning-based n inhalation technique", "learning-based n imputation techniques", "learning-based n truncation technique", "learning-based _ floatation technique", "learning-based k floatation technique", "learning-based no2 floatation 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 n floatation technique") OR ("learning-based n implantation technique"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based n floatation technique\") OR (\"learning-based n implantation technique\"))".
• Removing quotes may allow a broader search: (( learning-based n floatation technique ) OR ( learning-based n implantation technique )).
• Adding a wildcard symbol may retrieve word variants: (("learning-based n floatation technique") OR ("learning-based n implantation technique"))*.