Perhaps you should try some spelling variations:
"modified objective optimization algorithm" » "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm", "modified multiobjective optimization algorithm"
"modified qoe estimation algorithms" » "modified qoe estimation algorithm", "modified qoe optimization algorithms", "modified qoe optimisation algorithm", "modified pose estimation algorithms", "modified _ estimation algorithms", "modified cover estimations algorithms", "modified male estimation algorithms", "modified bi1 estimation algorithms"

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