Perhaps you should try some spelling variations:
"learning-based no2de segmentation techniques" » "learning-based no2de augmentation techniques", "learning-based no2de imputation techniques", "learning-based 3d segmentation techniques", "learning-based shape segmentation techniques", "learning-based anode segmentation techniques", "learning-based code segmentation techniques", "learning-based no2 segmentation techniques"
"learning-based h2o2 reduction techniques" » "learning-based h2o2 reduction technique", "learning-based h2o2 imputation techniques", "learning-based no2 reduction techniques"

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 h2o2 reduction techniques") or ("learning-based no2de segmentation techniques"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("learning-based h2o2 reduction techniques") OR ("learning-based no2de segmentation techniques"))*.
• Removing quotes may allow a broader search: (( learning-based h2o2 reduction techniques ) or ( learning-based no2de segmentation techniques ))*.