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