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