Perhaps you should try some spelling variations:
optimization algorithms » estimation algorithms, estimation algorithm, optimized algorithms
optimisation algorithm » estimation algorithm, estimation algorithms
optimizer algorithms » optimized algorithms, optimized algorithm
risk optimisation » _ optimisation, risk estimation
game » same

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

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