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