Perhaps you should try some spelling variations:
"learning-based co segmentation techniques" » "learning-based co augmentation techniques", "learning-based co imputation techniques", "learning-based 3d segmentation techniques", "learning-based code segmentation techniques", "learning-based no2 segmentation techniques", "learning-based _ segmentation techniques"
"learning-based two inhalation technique" » "learning-based two floatation technique", "learning-based two implantation technique", "learning-based two imputation techniques", "learning-based _ inhalation technique", "learning-based tool 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 co segmentation techniques") OR ("learning-based two inhalation technique"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based co segmentation techniques\") OR (\"learning-based two inhalation technique\"))*".
• Removing quotes may allow a broader search: (( learning-based co segmentation techniques ) OR ( learning-based two inhalation technique ))*.