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

Try widening your search to All Fields.

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

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