Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithm, optimization algorithms
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
market estimation » market optimization, parameter estimation
modified market » modified male
qoe estimation » pose estimation, _ estimation, cover estimations
modified qoe » modified male, modified _, modified bi1

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