Perhaps you should try some spelling variations:
simulation techniques » imputation techniques, mitigation techniques, segmentation techniques
floatation technique » inhalation technique, implantation technique, imputation techniques
anode simulation » a simulation, 3d simulation, based simulation
co floatation » _ floatation
based anode » based code
based co » based code, based no2, based two

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

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