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

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• Performing a fuzzy search may retrieve terms with similar spellings: (( modified motion estimation algorithmss ) or ( modified bi1 optimization algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified motion estimation algorithmss ) OR ( modified bi1 optimization algorithms )).
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