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 two segmentation techniques"
"learning-based n inhalation technique" » "learning-based n floatation technique", "learning-based n implantation technique", "learning-based n imputation techniques", "learning-based _ inhalation technique", "learning-based _ inflation technique", "learning-based k inflation technique", "learning-based k 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 co segmentation techniques") or ("learning-based n inhalation technique"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("learning-based co segmentation techniques") OR ("learning-based n inhalation technique"))*.
• Removing quotes may allow a broader search: (( learning-based co segmentation techniques ) or ( learning-based n inhalation technique ))*.