Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified chu predation algorithm" » "modified chu predators algorithm", "modified chu estimation algorithm", "modified _ predation algorithm", "modified churn prediction algorithm", "modified bi1 predation algorithm", "modified df predation algorithm"

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