Perhaps you should try some spelling variations:
"modified near approximation algorithm" » "modified near approximation algorithms", "modified one approximation algorithm", "modified network approximation algorithm", "modified _ approximation algorithm", "modified seird approximation algorithm", "modified adam approximation algorithm"
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified motion estimation algorithms"

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