Perhaps you should try some spelling variations:
"modified risk estimation algorithmss" » "modified risk estimation algorithms", "modified risk estimation algorithm", "modified risk optimization algorithms", "modified pose estimation algorithmss", "modified bi1 estimation algorithmss"
"modified allocation optimization algorithm" » "modified allocation optimization algorithms", "modified allocation optimisation algorithm", "modified allocation estimation algorithm", "modified location optimization algorithm"

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 risk estimation algorithmss") OR ("modified allocation optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified risk estimation algorithmss ) or ( modified allocation optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified risk estimation algorithmss") or ("modified allocation optimization algorithm"))*.