Perhaps you should try some spelling variations:
"learning-based no2node augmentation techniques" » "learning-based no2node segmentation techniques", "learning-based no2node imputation techniques", "learning-based anode augmentation techniques", "learning-based _o2node augmentation techniques", "learning-based ko2node augmentation techniques", "learning-based no2o2node augmentation techniques"
"learning-based n simulation technique" » "learning-based n imputation techniques", "learning-based n inhalation technique", "learning-based n implantation technique", "learning-based _ simulation technique", "learning-based a simulation technique", "learning-based _ simulations technique", "learning-based k simulation technique", "learning-based no2 simulation technique"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("learning-based n simulation technique") or ("learning-based no2node augmentation techniques"))~.
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