Perhaps you should try some spelling variations:
"_ optimization algorithms" » "_ estimation algorithms", "_ optimized algorithms", "_ optimizer algorithms"
"_ optimisation algorithm" » "_ estimation algorithms"
"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: (("qoe estimation algorithm") or ((("_ optimization algorithms") OR ("_ optimisation algorithm"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("qoe estimation algorithm") OR ((("_ optimization algorithms") OR ("_ optimisation algorithm")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"qoe estimation algorithm\") or (((\"_ optimization algorithms\") OR (\"_ optimisation algorithm\"))))".
• Removing quotes may allow a broader search: (( qoe estimation algorithm ) or ((( _ optimization algorithms ) OR ( _ optimisation algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("qoe estimation algorithm") or ((("_ optimization algorithms") OR ("_ optimisation algorithm"))))*.