Perhaps you should try some spelling variations:
implantation technique » imputation techniques, floatation technique, inhalation technique
limitation techniques » imputation techniques, mitigation techniques, augmentation techniques
code limitation » co limitation, food limitation
k implantation » _ implementation
based code » based anode
based k » based _, based n, based 3d

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