Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, approximation algorithms
response optimisation » response optimization
same estimation » pose estimation, sphere estimation

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• Performing a fuzzy search may retrieve terms with similar spellings: (( same estimation algorithms ) OR ( response optimisation algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( same estimation algorithms ) OR ( response optimisation algorithm ))*".