Perhaps you should try some spelling variations:
parameter optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
sach algorithm » search algorithm, graph algorithms, source algorithm
cong pham » cong phan, chong phap, cong ha
pham sach » pham anh, nam sach, pham hanh

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: (( cong pham sach algorithm ) OR ( modified parameter optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( cong pham sach algorithm ) or ( modified parameter optimisation algorithm ))*.