Perhaps you should try some spelling variations:
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"post optimized algorithms" » "post optimized algorithm", "post optimization algorithms", "cost optimized algorithms"
"most optimizer algorithms" » "most optimized algorithm", "most optimization algorithms"

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

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