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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( cover optimisation algorithm ) or ( ((same optimization) OR (game optimization)) algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cover optimisation algorithm ) OR ( ((same optimization) OR (game optimization)) algorithms ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cover optimisation algorithm ) or ( ((same optimization) OR (game optimization)) algorithms ))*".