Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
estimation algorithmss » estimation algorithms, estimation algorithm
parameter estimation » parameter estimates, parameter optimization
df optimization » _ optimization, qoe optimization, _ optimisation
modified df » modified _, modified adam, modified bi1

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