Perhaps you should try some spelling variations:
"optimization algorithmss" » "optimisation algorithm", "estimation algorithms", "estimation algorithm", "optimisation algorithms", "estimation algorithmss"
"optimization algorithms" » "optimisation algorithm", "estimation algorithms", "estimation algorithm"
"optimizer algorithms" » "optimized algorithms", "optimized algorithm"

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: (((("optimization algorithmss") OR ("optimizer algorithms"))) OR ("optimization algorithms"))~.
• Removing quotes may allow a broader search: (((( optimization algorithmss ) or ( optimizer algorithms ))) or ( optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (((("optimization algorithmss") or ("optimizer algorithms"))) or ("optimization algorithms"))*.