Perhaps you should try some spelling variations:
"learning-based co augmentation techniques" » "learning-based co segmentation techniques", "learning-based co imputation techniques", "learning-based data augmentation techniques", "learning-based no2 augmentation techniques", "learning-based two augmentation techniques", "learning-based _ augmentation techniques"
"learning-based code reduction techniques" » "learning-based code reduction technique", "learning-based code imputation techniques", "learning-based model reduction techniques", "learning-based closed reduction techniques", "learning-based anode reduction techniques", "learning-based no2de reduction techniques", "learning-based twode reduction techniques", "learning-based _de reduction techniques"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based co augmentation techniques\") OR (\"learning-based code reduction techniques\"))~".
• Removing quotes may allow a broader search: (( learning-based co augmentation techniques ) OR ( learning-based code reduction techniques ))~.
• Adding a wildcard symbol may retrieve word variants: (("learning-based co augmentation techniques") OR ("learning-based code reduction techniques"))*.