Perhaps you should try some spelling variations:
"qoe optimization algorithms" » "qoe optimisation algorithm", "qoe estimation algorithms", "qoe estimation algorithm", "game optimization algorithms", "_ optimization algorithms", "stage optimization algorithms"
"_ optimizer algorithms" » "_ optimized algorithms", "_ optimize algorithms", "_ optimise algorithms"
"done optimized algorithm" » "done optimized algorithms", "dong optimized algorithm", "one optimized algorithm", "don optimized algorithm"

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: (((("done optimized algorithm") or ("_ optimizer algorithms"))) or ("qoe optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("done optimized algorithm") OR ("_ optimizer algorithms"))) OR ("qoe optimization algorithms")).
• Removing quotes may allow a broader search: (((( done optimized algorithm ) or ( _ optimizer algorithms ))) or ( qoe optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("done optimized algorithm") or ("_ optimizer algorithms"))) or ("qoe optimization algorithms"))*.