Perhaps you should try some spelling variations:
"modified adaptive quantization algorithm" » "modified adaptive estimation algorithm", "modified adaptive ventilation algorithm", "modified passive quantization algorithm"
"modified choosing optimized algorithm" » "modified choosing optimized algorithms", "modified choosing optimizer algorithms", "modified choosing optimizer algorithm", "modified caging optimized algorithm"

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