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

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