Perhaps you should try some spelling variations:
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"dung optimized algorithms" » "dung optimizer algorithms", "dung optimization algorithms", "dung optimizer algorithmss"
"dong optimized algorithm" » "dong optimizer algorithms", "cong optimized algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong optimized algorithm") or ("dung optimized algorithms"))) or ("_ estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong optimized algorithm") OR ("dung optimized algorithms"))) OR ("_ estimation algorithms")).
• Removing quotes may allow a broader search: (((( dong optimized algorithm ) or ( dung optimized algorithms ))) or ( _ estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("dong optimized algorithm") or ("dung optimized algorithms"))) or ("_ estimation algorithms"))*.