Perhaps you should try some spelling variations:
parameter estimates » parameter estimation
estimates algorithm » estimation algorithm, estimation algorithms
roms algorithm » mom algorithm, our algorithm
code based » model based, coal based, income based
based roms » based cross, based robust

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

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