Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
policy optimization » topology 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.

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