Perhaps you should try some spelling variations:
"_ estimation algorithms" » "_ estimation algorithm", "_ optimization algorithms", "_ optimisation algorithm"
"same optimized algorithms" » "same optimizer algorithms", "same optimization algorithms", "same optimizer algorithmss"
"same optimized algorithm" » "same optimizer 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: (((("same optimized algorithms") OR ("same optimized algorithm"))) OR ("_ estimation algorithms"))~.
• Removing quotes may allow a broader search: (((( same optimized algorithms ) or ( same optimized algorithm ))) or ( _ estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (((("same optimized algorithms") or ("same optimized algorithm"))) or ("_ estimation algorithms"))*.