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

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: (("_ estimation algorithms") OR ((("most optimized algorithm") OR ("post optimizer algorithms"))))~.
• Removing quotes may allow a broader search: (( _ estimation algorithms ) or ((( most optimized algorithm ) or ( post optimizer algorithms ))))~.
• Adding a wildcard symbol may retrieve word variants: (("_ estimation algorithms") or ((("most optimized algorithm") or ("post optimizer algorithms"))))*.