Perhaps you should try some spelling variations:
"_ optimization algorithms" » "_ optimisation algorithm", "_ estimation algorithms", "_ optimized algorithms"
"qoe optimizer algorithms" » "qoe optimized algorithms", "qoe optimized algorithm"
"qoe estimation algorithm" » "pose estimation algorithm", "_ estimation algorithm", "cover estimations algorithm"

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

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