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