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

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: (( ((same optimisation) OR (game optimization)) algorithms ) OR ( qoe optimisation algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((same optimisation) OR (game optimization)) algorithms ) or ( qoe optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((same optimisation) OR (game optimization)) algorithms ) or ( qoe optimisation algorithm ))*.