Perhaps you should try some spelling variations:
"modified df optimized algorithms" » "modified df optimized algorithm", "modified df optimizer algorithms", "modified df optimization algorithms", "modified _ optimized algorithms", "modified _ optimize algorithms", "modified adam optimized algorithms", "modified bi1 optimized algorithms"
"modified adaptive estimation algorithm" » "modified adaptive ventilation algorithm", "modified quantile estimation algorithm", "modified adaptive quantization algorithm", "modified passive estimation algorithm"

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