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

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