Perhaps you should try some spelling variations:
multiobjective estimation » multiobjective optimization
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
nursing learning » nursing caring, enabling learning, during weaning
method algorithm » mom algorithm
learning method » learning methods, graining methods, learning emotion

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: (( nursing learning method algorithm ) OR ( modified multiobjective estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( nursing learning method algorithm ) or ( modified multiobjective estimation algorithms ))*.