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