Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
van algorithm » adam algorithm, _ algorithm, mom algorithm
code thai » cong thai, co thai
thai van » thi van, thanh van, thai vung

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 thai van algorithm ) OR ( modified parameter estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( code thai van algorithm ) or ( modified parameter estimation algorithms ))*.