Perhaps you should try some spelling variations:
"modified multiobjective optimisation algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithm", "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective estimation algorithms"
"modified df optimisation algorithmsssss" » "modified df optimization algorithms", "modified df optimization algorithmssssss", "modified df estimation algorithmsssss", "modified df estimation algorithmssssss", "modified _ optimisation algorithmsssss", "modified _ optimization algorithmsssss", "modified qoe optimization algorithmsssss", "modified adam optimisation algorithmsssss", "modified bi1 optimisation algorithmsssss"

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