Perhaps you should try some spelling variations:
parameters optimization » parameter optimization, parameter estimation
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
association algorithm » classification algorithm, approximation algorithm, estimation algorithm
code response » dose response, cell response, host response

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

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