Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified based estimation algorithmss" » "modified based estimation algorithms", "modified based optimization algorithms", "modified pose estimation algorithmss", "modified based investigation algorithmss", "modified pulses estimation algorithmss", "modified male estimation algorithmss"

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