Perhaps you should try some spelling variations:
objective optimization » multiobjective optimization
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
method algorithm » mom algorithm
learing method » learning method, learning methods, scoring method
_ learing » _ learning, _ hearing, _ leaching

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: (( modified objective optimization algorithm ) OR ( _ learing method algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified objective optimization algorithm ) or ( _ learing method algorithm ))*.