Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithmss" » "modified multiobjective optimization algorithmss", "modified multiobjective estimation algorithm", "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithms", "modified multiobjective optimisation algorithms"
"modified network estimation algorithms" » "modified network estimation algorithm", "modified network optimization algorithms", "modified network optimisation algorithm", "certified network estimation algorithms", "defined network estimation algorithms", "modified near estimation 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 multiobjective estimation algorithmss") OR ("modified network estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithmss ) or ( modified network estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective estimation algorithmss") or ("modified network estimation algorithms"))*.