Perhaps you should try some spelling variations:
objective optimisation » objective optimization, multiobjective optimization
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
research algorithm » search algorithm
using research » nursing research, rising research, asia research
code » core

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

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