Perhaps you should try some spelling variations:
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"done optimized algorithms" » "done optimizer algorithms", "done optimization algorithms", "done optimizer algorithmss", "one optimized algorithms", "don optimized algorithms"
"dong optimized algorithm" » "dong optimizer algorithms", "cong optimized algorithm", "dung optimized 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: (((("done optimized algorithms") OR ("dong optimized algorithm"))) OR ("_ estimation algorithms"))~.
• Removing quotes may allow a broader search: (((( done optimized algorithms ) or ( dong optimized algorithm ))) or ( _ estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (((("done optimized algorithms") or ("dong optimized algorithm"))) or ("_ estimation algorithms"))*.