Perhaps you should try some spelling variations:
imputation techniques » implantation technique, augmentation techniques, segmentation techniques
indication techniques » inhalation technique, mitigation techniques, reduction techniques
anodes indication » novel indication
based anodes » based anode
based code » based anode

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