Perhaps you should try some spelling variations:
"learning-based a augmentation techniques" » "learning-based a segmentation techniques", "learning-based data augmentation techniques", "learning-based image augmentation techniques", "learning-based _ augmentation techniques", "learning-based k augmentation techniques", "learning-based n augmentation techniques"
"learning-based a imputation techniques" » "learning-based a implantation technique", "learning-based a segmentation techniques", "learning-based a floatation technique", "learning-based data imputation techniques", "learning-based _ computation techniques", "learning-based _ reputation techniques", "learning-based _ imputation techniques", "learning-based k imputation techniques", "learning-based n imputation techniques"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("learning-based a imputation techniques") OR ("learning-based a augmentation techniques"))~.
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