Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
game optimisation » game optimization, stage optimization, _ optimisation
one approximation » time approximation, _ approximation, rough approximations
modified game » modified male, modified adam
modified one » modified male, modified near, modified orca

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified game optimisation algorithm ) OR ( modified one approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified game optimisation algorithm ) or ( modified one approximation algorithms ))*.