Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithm, optimized algorithms
estimation algorithms » estimation algorithm, optimisation algorithm, approximation algorithms
lighting optimization » lighting estimation, staffing optimization
parameter estimation » parameter estimates, parameter optimization
modified lighting » modified caging

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

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