Perhaps you should try some spelling variations:
limitation techniques » imputation techniques, mitigation techniques, augmentation techniques
inhalation technique » floatation technique, implantation technique, imputation techniques
code limitation » co limitation, food limitation
based code » based anode
based tool » based two

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 limitation techniques ) or ( learning-based tool inhalation technique ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( learning-based code limitation techniques ) OR ( learning-based tool inhalation technique )).
• Adding a wildcard symbol may retrieve word variants: (( learning-based code limitation techniques ) or ( learning-based tool inhalation technique ))*.