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 objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation algorithm"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective allocation algorithm\") OR (\"modified risk estimation algorithmss\"))~".
• Removing quotes may allow a broader search: (( modified objective allocation algorithm ) OR ( modified risk estimation algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective allocation algorithm") OR ("modified risk estimation algorithmss"))*.