Perhaps you should try some spelling variations:
"learning-based k segmentation techniques" » "learning-based k augmentation techniques", "learning-based k imputation techniques", "learning-based 3d segmentation techniques", "learning-based _ segmentation techniques", "learning-based n segmentation techniques"
"learning-based a simulation techniques" » "learning-based a imputation techniques", "learning-based a mitigation techniques", "learning-based a inhalation technique", "learning-based _ simulation techniques", "learning-based n simulation techniques", "learning-based 3d simulation techniques"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("learning-based a simulation techniques") OR ("learning-based k segmentation techniques"))~.
• Removing quotes may allow a broader search: (( learning-based a simulation techniques ) or ( learning-based k segmentation techniques ))~.
• Adding a wildcard symbol may retrieve word variants: (("learning-based a simulation techniques") or ("learning-based k segmentation techniques"))*.