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

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

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