Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
pose optimisation » _ optimisation, pose estimation, game optimization
qoe optimization » game optimization, _ optimization, stage optimization
game estimation » pose estimation, game optimization

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"game estimation algorithms\\") or (\\"((pose optimisation) OR (qoe optimization)) algorithm\\"))\"".
• Removing quotes may allow a broader search: (( game estimation algorithms ) or ( ((pose optimisation) OR (qoe optimization)) algorithm )).