Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithms
adaptive estimation » adaptive ventilation, quantile estimation, adaptive quantization
modified adaptive » modified passive
a optimisation » _ optimisation, _ optimization, game optimization
modified a » modified _, modified df, modified adam

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 a optimisation algorithm ) OR ( modified adaptive estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified a optimisation algorithm ) or ( modified adaptive estimation algorithm ))*.