Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified df evolutionary algorithm" » "modified df evolution algorithm", "modified df solution algorithm", "modified _ evolutionary algorithm", "modified adam evolutionary algorithm", "modified bi1 evolutionary 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 df evolutionary algorithm") OR ("modified multiobjective estimation algorithm"))~.
• Removing quotes may allow a broader search: (( modified df evolutionary algorithm ) or ( modified multiobjective estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified df evolutionary algorithm") or ("modified multiobjective estimation algorithm"))*.