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

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based two floatation technique ) OR ( learning-based code limitation techniques ))~".
• Adding a wildcard symbol may retrieve word variants: (( learning-based two floatation technique ) OR ( learning-based code limitation techniques ))*.