Perhaps you should try some spelling variations:
"modified adamdaptive quantization algorithm" » "modified adaptive quantization algorithm", "modified adamdaptive estimation algorithm", "modified _damdaptive quantization algorithm", "modified dfdamdaptive quantization algorithm", "modified adamdamdaptive quantization algorithm"
"modified a approximation algorithms" » "modified _ approximation algorithms", "modified one approximation algorithms", "modified time approximation algorithms", "modified df approximation algorithms", "modified adam approximation algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adamdaptive quantization algorithm\") OR (\"modified a approximation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified adamdaptive quantization algorithm ) OR ( modified a approximation algorithms ))~.
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