Perhaps you should try some spelling variations:
mitigation techniques » imputation techniques
reduction techniques » reduction technique, imputation techniques
code reduction » model reduction, closed reduction
co mitigation » _ mitigation, _ litigation, co limitation
based code » based anode
based co » based no2, based two, 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 code reduction techniques ) or ( learning-based co mitigation techniques ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based code reduction techniques ) OR ( learning-based co mitigation techniques )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based code reduction techniques ) or ( learning-based co mitigation techniques ))*.