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

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based n floatation technique ) OR ( learning-based two orientation techniques ))~.
• Adding a wildcard symbol may retrieve word variants: (( learning-based n floatation technique ) or ( learning-based two orientation techniques ))*.