Perhaps you should try some spelling variations:
parameter optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
duc algorithm » our algorithm, adam algorithm, _ algorithm
code phan » co phan, cong phan, de phan
phan duc » pham duc, phan tu, phan dau

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: (( code phan duc algorithm ) OR ( modified parameter optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( code phan duc algorithm ) or ( modified parameter optimisation algorithm ))*.