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

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