Perhaps you should try some spelling variations:
"modified quantile approximation algorithms" » "modified time approximation algorithms", "modified diophantine approximation algorithms", "modified adaptive approximation algorithms"
"designed network estimation algorithm" » "designed network optimization algorithm", "defined network estimation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("designed network estimation algorithm") or ("modified quantile approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("designed network estimation algorithm") OR ("modified quantile approximation algorithms")).
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