Perhaps you should try some spelling variations:
"modified topology optimization algorithms" » "modified topology optimisation algorithm", "modified topology estimation algorithm", "modified topology optimized algorithms"
"modified parameters estimation algorithms" » "modified parameter estimation algorithms", "modified parameter estimates algorithms", "modified parameter optimization algorithms", "modified parameters estimation algorithm", "modified parameters optimisation algorithm", "modified parameters approximation algorithms"

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: (("modified parameters estimation algorithms") OR ("modified topology optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified parameters estimation algorithms ) or ( modified topology optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified parameters estimation algorithms") or ("modified topology optimization algorithms"))*.