Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
market optimization » parameter optimization, market capitalization
cover optimisation » qoe optimization
game optimization » stage optimization, qoe optimization, _ 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: (( ((game optimization) OR (market optimization)) algorithm ) OR ( cover optimisation algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((game optimization) OR (market optimization)) algorithm ) or ( cover optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((game optimization) OR (market optimization)) algorithm ) or ( cover optimisation algorithm ))*.