Perhaps you should try some spelling variations:
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"risk optimized algorithms" » "risk optimized algorithm", "risk optimization algorithms", "write optimized algorithms"
"risk optimizer algorithms" » "risk optimized algorithm", "risk optimization algorithms"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("risk optimized algorithms") OR ("risk optimizer algorithms"))) or ("_ estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("risk optimized algorithms") OR ("risk optimizer algorithms"))) OR ("_ estimation algorithms")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"risk optimized algorithms\") OR (\"risk optimizer algorithms\"))) or (\"_ estimation algorithms\"))".
• Removing quotes may allow a broader search: (((( risk optimized algorithms ) OR ( risk optimizer algorithms ))) or ( _ estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("risk optimized algorithms") OR ("risk optimizer algorithms"))) or ("_ estimation algorithms"))*.