Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
lam algorithm » adam algorithm, mom algorithm, _ algorithm
code phap » de phap, che phap
phap lam » phap luat, phap luan, phap nham

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