Perhaps you should try some spelling variations:
"learning-based n imputation techniques" » "learning-based n implantation technique", "learning-based n augmentation techniques", "learning-based n segmentation techniques", "learning-based _ computation techniques", "learning-based _ reputation techniques", "learning-based _ imputation techniques", "learning-based k imputation techniques", "learning-based no2 imputation techniques"
"learning-based 3d simulation techniques" » "learning-based 3d mitigation techniques", "learning-based 3d segmentation techniques", "learning-based 3d inhalation technique", "learning-based _ simulation techniques", "learning-based a simulation techniques", "learning-based mri simulation techniques", "learning-based co simulation techniques", "learning-based k simulation 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 n imputation techniques") OR ("learning-based 3d simulation techniques"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based n imputation techniques\") OR (\"learning-based 3d simulation techniques\"))".
• Removing quotes may allow a broader search: (( learning-based n imputation techniques ) OR ( learning-based 3d simulation techniques )).
• Adding a wildcard symbol may retrieve word variants: (("learning-based n imputation techniques") OR ("learning-based 3d simulation techniques"))*.