Perhaps you should try some spelling variations:
approximation algorithm » approximation algorithms
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
time approximation » one approximation, _ approximation
game optimisation » game optimization, stage optimization, _ optimisation
modified game » modified male, modified adam
modified time » modified bi1, modified male

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 time approximation algorithm ))~.
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