Perhaps you should try some spelling variations:
segmentation techniques » augmentation techniques
imputation techniques » implantation technique, augmentation techniques, floatation technique
tool segmentation » 3d segmentation, tool orientation
based tool » based two
based no2 » based co, based n

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• Performing a fuzzy search may retrieve terms with similar spellings: (( learning-based no2 imputation techniques ) or ( learning-based tool segmentation techniques ))~.
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