Perhaps you should try some spelling variations:
"modified changing optimization algorithmssss" » "modified changing optimisation algorithm", "modified changing optimisation algorithmsss", "modified changing estimation algorithmssss", "modified changing estimation algorithmsss", "modified staffing optimization algorithmssss", "modified caging optimization algorithmssss"
"modified bayesian optimization algorithms" » "modified bayesian optimisation algorithm", "modified bayesian estimation algorithms", "modified bayesian estimation algorithm"

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