Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
game optimisation » game optimization, stage optimization, _ optimisation
qoe optimisation » _ optimisation, game optimization, _ optimization
qoe optimization » game optimization, _ optimization, stage 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: "\"((\\"((qoe optimisation) OR (qoe optimization)) algorithm\\") or (\\"game optimisation algorithm\\"))\"".
• Removing quotes may allow a broader search: (( ((qoe optimisation) OR (qoe optimization)) algorithm ) or ( game optimisation algorithm )).