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