Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
truncation technique » floatation technique, inhalation technique, reduction technique
co imputation » co limitation
based two » based tool
based co » based code, based no2, based _

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 co imputation techniques ) OR ( learning-based two truncation technique ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based co imputation techniques ) OR ( learning-based two truncation technique ))".
• Adding a wildcard symbol may retrieve word variants: (( learning-based co imputation techniques ) OR ( learning-based two truncation technique ))*.