Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, approximation algorithms
network optimisation » network optimization
passive estimation » pose estimation
modified passive » modified adaptive
certified » verified

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified passive estimation algorithms ) OR ( certified network optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified passive estimation algorithms ) or ( certified network optimisation algorithm ))*.