Perhaps you should try some spelling variations:
estimates algorithm » estimation algorithm, estimation algorithms
parameter estimates » parameter estimation
two algorithm » _ algorithm, mom algorithm
our algorithm » source algorithm, qspr algorithm, _ algorithm
code based » model based, coal based, income based

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 ((two algorithm) OR (our algorithm)) ) or ( modified parameter estimates algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( code based ((two algorithm) OR (our algorithm)) ) OR ( modified parameter estimates algorithm )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code based ((two algorithm) OR (our algorithm)) ) or ( modified parameter estimates algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( code based ((two algorithm) OR (our algorithm)) ) or ( modified parameter estimates algorithm ))*.