Perhaps you should try some spelling variations:
mitigation techniques » imputation techniques
inhalation technique » floatation technique, implantation technique, imputation techniques
3d inhalation » _ inhalation
based code » based anode
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 code mitigation techniques ) or ( learning-based 3d inhalation technique ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based code mitigation techniques ) OR ( learning-based 3d inhalation technique )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based code mitigation techniques ) or ( learning-based 3d inhalation technique ))*.