Perhaps you should try some spelling variations:
"modified trace optimization algorithms" » "modified trace optimisation algorithm", "modified trace estimation algorithms", "modified trace estimation algorithm", "modified game optimization algorithms", "modified stage optimization algorithms", "modified qoe optimization algorithms", "modified traces optimization algorithms", "modified male optimization algorithms", "modified orca optimization algorithms"
"modified adaptive quantization algorithm" » "modified adaptive estimation algorithm", "modified adaptive ventilation algorithm", "modified passive quantization algorithm"

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