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