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

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 imputation techniques ) OR ( learning-based no2de simulation techniques ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based no2 imputation techniques ) OR ( learning-based no2de simulation techniques ))".
• Adding a wildcard symbol may retrieve word variants: (( learning-based no2 imputation techniques ) OR ( learning-based no2de simulation techniques ))*.