Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, approximation algorithms
qoe optimisation » qoe optimization, _ optimisation, game optimization
modified qoe » modified male, modified _, modified bi1
motion » notion

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