Perhaps you should try some spelling variations:
"learning-based two augmentation techniques" » "learning-based two segmentation techniques", "learning-based two imputation techniques", "learning-based data augmentation techniques", "learning-based tool augmentation techniques", "learning-based co augmentation techniques"
"learning-based twode mitigation techniques" » "learning-based twode imputation techniques", "learning-based anode mitigation techniques", "learning-based code mitigation techniques", "learning-based anodes mitigation techniques", "learning-based toolde mitigation 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 twode mitigation techniques") OR ("learning-based two augmentation techniques"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based twode mitigation techniques\") OR (\"learning-based two augmentation techniques\"))*".
• Removing quotes may allow a broader search: (( learning-based twode mitigation techniques ) OR ( learning-based two augmentation techniques ))*.