Perhaps you should try some spelling variations:
"modified passive optimization algorithms" » "modified passive optimisation algorithm", "modified passive estimation algorithms", "modified passive estimation algorithm", "modified bayesian optimization algorithms", "modified game optimization algorithms", "modified policy optimization algorithms", "modified adaptive optimization algorithms"
"modified df predation algorithm" » "modified df predators algorithm", "modified df estimation algorithm", "modified _ predation algorithm", "modified adam predation algorithm", "modified bi1 predation algorithm"

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