Perhaps you should try some spelling variations:
"modified notion optimization algorithms" » "modified notion optimisation algorithm", "modified notion estimation algorithm", "modified notion optimized algorithms", "modified network optimization algorithms", "modified policy optimization algorithms", "modified allocation optimization algorithms"
"modified robust estimation algorithms" » "modified robust estimation algorithm", "modified robust optimisation algorithm", "modified robust approximation algorithms", "modified robust optimization algorithms", "modified pose estimation algorithms", "modified risk estimation 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 robust estimation algorithms") OR ("modified notion optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified robust estimation algorithms ) or ( modified notion optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified robust estimation algorithms") or ("modified notion optimization algorithms"))*.