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

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• Removing quotes may allow a broader search: (( modified qoe optimized algorithm ) OR ( modified multiobjective estimation algorithms ))~.
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