Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithmsss" » "modified multiobjective optimization algorithmsss", "modified multiobjective estimation algorithms"
"modified adam estimation algorithm" » "modified df estimation algorithm", "modified near estimation algorithm"

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