Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
floatation technique » inhalation technique, implantation technique, truncation technique
k imputation » _ computation, _ reputation
based 3do2 » based 3d, based no2
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 3do2 floatation technique ) OR ( learning-based k imputation techniques ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based 3do2 floatation technique ) OR ( learning-based k imputation techniques ))".
• Adding a wildcard symbol may retrieve word variants: (( learning-based 3do2 floatation technique ) OR ( learning-based k imputation techniques ))*.