Perhaps you should try some spelling variations:
multiobjective estimation » multiobjective optimization
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
code learning » how learning
a algorithm » _ algorithm, _ algorithms, adam algorithm
learning a » learning _

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( code learning a algorithm ) or ( modified multiobjective estimation algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( code learning a algorithm ) OR ( modified multiobjective estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( code learning a algorithm ) or ( modified multiobjective estimation algorithms ))*.