Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm", "modified multiobjective approximation algorithms"
"modified dorca optimization algorithms" » "modified dorca optimisation algorithm", "modified dorca estimation algorithm", "modified dorca optimized algorithms", "modified policy optimization algorithms", "modified qoe optimization algorithms", "modified orca 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 dorca optimization algorithms") OR ("modified multiobjective estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified dorca optimization algorithms ) or ( modified multiobjective estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified dorca optimization algorithms") or ("modified multiobjective estimation algorithms"))*.