Perhaps you should try some spelling variations:
"modified notion optimisation algorithm" » "modified notion optimization algorithms", "modified notion estimation algorithm", "modified notion estimation algorithms", "modified network optimization 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 notion optimisation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified qoe optimized algorithms ) OR ( modified notion optimisation algorithm ))~.
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