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

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

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