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

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: "\"((\\"post estimation algorithms\\") or (\\"((game optimization) OR (qoe optimization)) algorithm\\"))\"".
• Removing quotes may allow a broader search: (( post estimation algorithms ) or ( ((game optimization) OR (qoe optimization)) algorithm )).