Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
force algorithm » source algorithm, search algorithm
using force » using morse, cutting force
code » core

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code using force algorithm ) OR ( modified parameter estimation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( code using force algorithm ) OR ( modified parameter estimation algorithms ))*.