Perhaps you should try some spelling variations:
segmentation techniques » augmentation techniques, imputation techniques
floatation technique » inhalation technique, implantation technique, imputation techniques
no2 floatation » _ floatation
k segmentation » 3d segmentation
based no2 » based co, based n
based k » based _, based n, based 3d

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( learning-based no2 floatation technique ) OR ( learning-based k segmentation techniques ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based no2 floatation technique ) OR ( learning-based k segmentation techniques ))".
• Adding a wildcard symbol may retrieve word variants: (( learning-based no2 floatation technique ) OR ( learning-based k segmentation techniques ))*.