Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
sers algorithm » search algorithm, our algorithm, qspr algorithm
code based » model based, coal based, income based
based sers » based sensor

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 based sers algorithm ) OR ( modified parameter estimation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( code based sers algorithm ) OR ( modified parameter estimation algorithms ))*.