Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
simulation techniques » mitigation techniques, segmentation techniques, inhalation technique
3d simulation » _ simulation, a simulation, mri simulation
based no2de » based anode, based code, based no2
based 3d » based _, based co, based k

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 no2de imputation techniques ) or ( learning-based 3d simulation techniques ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based no2de imputation techniques ) OR ( learning-based 3d simulation techniques )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based no2de imputation techniques ) or ( learning-based 3d simulation techniques ))*.