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 code augmentation techniques", "learning-based no2 augmentation techniques", "learning-based two augmentation techniques"
"learning-based co implantation technique" » "learning-based co imputation techniques", "learning-based co floatation technique", "learning-based co inhalation technique", "learning-based novel implantation technique", "learning-based code implantation technique", "learning-based no2 implantation technique", "learning-based two implantation technique"

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