Perhaps you should try some spelling variations:
"modified _damdaptive quantization algorithm" » "modified adaptive quantization algorithm", "modified _damdaptive estimation algorithm"
"modified a optimisation algorithm" » "modified a optimization algorithms", "modified a estimation algorithm", "modified a estimation algorithms", "modified _ optimisation algorithm", "modified _ optimization algorithm", "modified game optimization algorithm", "modified df optimisation algorithm", "modified adam optimisation algorithm"

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