Perhaps you should try some spelling variations:
"modified qoe optimisation algorithms" » "modified qoe optimization algorithms", "modified qoe estimation algorithms", "modified qoe estimation algorithm", "modified qoe optimization algorithmss", "modified qoe estimation algorithmss", "modified _ optimisation algorithms", "modified game optimization algorithms", "modified male optimisation algorithms", "modified bi1 optimisation algorithms"
"modified parameter optimisation algorithm" » "modified parameter optimization algorithm", "modified parameter estimation algorithm", "modified parameter optimization algorithms", "modified parameter estimation algorithms"

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