Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, approximation algorithms
topology optimisation » topology optimization, policy optimization
notion estimation » motion estimation

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