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