Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
static optimization » stage optimization, stochastic optimization, staffing optimization
passive estimation » pose estimation
modified passive » modified adaptive

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