Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified bayesian optimizer algorithms" » "modified bayesian optimized algorithms", "modified bayesian optimized algorithm", "modified bayesian optimization algorithms"

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 bayesian optimizer algorithms") OR ("modified multiobjective estimation algorithm"))~.
• Removing quotes may allow a broader search: (( modified bayesian optimizer algorithms ) or ( modified multiobjective estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified bayesian optimizer algorithms") or ("modified multiobjective estimation algorithm"))*.