Perhaps you should try some spelling variations:
augmentation techniques » segmentation techniques, imputation techniques
simulation technique » imputation techniques, inhalation technique, implantation technique
tool augmentation » data augmentation, tool orientation
closed simulation » based simulation
based closed » based code, based cross
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 tool augmentation techniques ) OR ( learning-based closed simulation technique ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( learning-based tool augmentation techniques ) OR ( learning-based closed simulation technique ))".
• Adding a wildcard symbol may retrieve word variants: (( learning-based tool augmentation techniques ) OR ( learning-based closed simulation technique ))*.