Perhaps you should try some spelling variations:
"_ optimization algorithm" » "_ optimization algorithms", "_ optimisation algorithm", "_ estimation 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("some optimized algorithms") or ("same optimized algorithm"))) or ("_ optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("some optimized algorithms") OR ("same optimized algorithm"))) OR ("_ optimization algorithm")).
• Removing quotes may allow a broader search: (((( some optimized algorithms ) or ( same optimized algorithm ))) or ( _ optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("some optimized algorithms") or ("same optimized algorithm"))) or ("_ optimization algorithm"))*.