Perhaps you should try some spelling variations:
"modified _daptive quantization algorithm" » "modified _daptive estimation algorithm", "modified adaptive quantization algorithm", "modified adaptive ventilation algorithm", "modified passive quantization algorithm"
"modified df simulation algorithms" » "modified df estimation algorithms", "modified df optimization algorithms", "modified df estimation algorithm", "modified _ simulation algorithms", "modified a simulation algorithms", "modified 3d simulation algorithms", "modified adam simulation algorithms", "modified bi1 simulation algorithms"

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