Perhaps you should try some spelling variations:
"modified passive optimization algorithmssss" » "modified passive optimization algorithms", "modified passive optimisation algorithm", "modified bayesian optimization algorithmssss", "modified game optimization algorithmssss", "modified policy optimization algorithmssss", "modified adaptive optimization algorithmssss"
"modified objective estimation algorithms" » "modified objective estimation algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective allocation algorithms"

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