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