Perhaps you should try some spelling variations:
"cost optimization algorithms" » "cost optimisation algorithm", "cost estimation algorithm", "cost optimized algorithms", "robust optimization algorithms", "qoe optimization algorithms", "smooth optimization algorithms"
"_ estimation algorithms" » "_ estimation algorithm", "_ optimisation algorithm", "_ approximation algorithms"
"_ optimizer algorithms" » "_ optimized algorithms", "_ optimized algorithm"

You may be able to get more results by adjusting your search query.

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