Perhaps you should try some spelling variations:
"verified network approximation algorithm" » "verified network approximation algorithms", "certified network approximation algorithm", "defined network approximation algorithm"
"modified adaptive estimation algorithm" » "modified adaptive ventilation algorithm", "modified quantile estimation algorithm", "modified adaptive quantization algorithm", "modified passive estimation algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adaptive estimation algorithm\") OR (\"verified network approximation algorithm\"))~".
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