Perhaps you should try some spelling variations:
parameter estimates » parameter estimation
estimates algorithm » estimation algorithm, estimation algorithms
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
original solution » original notion, optimal solution, minimal solution
core » more, care

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 OR core) original solution algorithm ) OR ( modified parameter estimates algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (code OR core) original solution algorithm ) or ( modified parameter estimates algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( (code OR core) original solution algorithm ) or ( modified parameter estimates algorithm ))*.