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