Perhaps you should try some spelling variations:
"modified multiobjective predation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective design algorithms", "modified multiobjective predation algorithm", "modified multiobjective predators algorithm", "modified multiobjective estimation algorithms"
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm"

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