Perhaps you should try some spelling variations:
"modified allocation estimation algorithm" » "modified allocation optimization algorithm", "modified motion estimation algorithm"
"modified qoe optimized algorithms" » "modified qoe optimized algorithm", "modified qoe optimizer algorithms", "modified qoe optimization algorithms", "modified _ optimized algorithms", "modified male optimized algorithms", "modified bi1 optimized algorithms"

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