Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation algorithm"
"_ estimation algorithmss" » "_ estimation algorithms", "_ estimation algorithm", "_ optimization algorithms"
"done optimized algorithms" » "done optimized algorithm", "done optimizer algorithms", "done optimization algorithms", "dong optimized algorithms", "one optimized algorithms", "don optimized 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: (("done optimized algorithms") or ((("_ optimization algorithm") or ("_ estimation algorithmss"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("done optimized algorithms") OR ((("_ optimization algorithm") OR ("_ estimation algorithmss")))).
• Removing quotes may allow a broader search: (( done optimized algorithms ) or ((( _ optimization algorithm ) or ( _ estimation algorithmss )))).
• Adding a wildcard symbol may retrieve word variants: (("done optimized algorithms") or ((("_ optimization algorithm") or ("_ estimation algorithmss"))))*.