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