Perhaps you should try some spelling variations:
applications algorithms » approximation algorithms
parameters optimization » parameter optimization, parameter estimation
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
legacy applications » device applications, research applications, finance applications

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: (( legacy applications algorithms ) OR ( parameters optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( legacy applications algorithms ) or ( parameters optimization algorithms ))*.