Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"active learning predation algorithm" » "active learning predators algorithm", "active learning prediction algorithm", "active learning emotion algorithm", "machine learning predation algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified multiobjective estimation algorithm") or ("active learning predation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified multiobjective estimation algorithm") OR ("active learning predation algorithm")).
• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithm ) or ( active learning predation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective estimation algorithm") or ("active learning predation algorithm"))*.