Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
dac algorithm » adam algorithm, _ algorithm, mom algorithm
code pham » che pham, cong pham
pham dac » pham duc, pham dang, pham sach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( code pham dac algorithm ) or ( modified parameter estimation algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( code pham dac algorithm ) OR ( modified parameter estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( code pham dac algorithm ) or ( modified parameter estimation algorithms ))*.