Perhaps you should try some spelling variations:
approximations algorithm » approximation algorithm, approximation algorithms
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
rough approximations » one approximation
pose optimisation » qoe optimization, _ optimisation, pose estimation

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: (( rough approximations algorithm ) OR ( pose optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( rough approximations algorithm ) or ( pose optimisation algorithm ))*.