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

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("pose estimation algorithms") or ((("qoe optimized algorithm") OR ("qoe optimizer algorithms"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("pose estimation algorithms") OR ((("qoe optimized algorithm") OR ("qoe optimizer algorithms")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"pose estimation algorithms\") or (((\"qoe optimized algorithm\") OR (\"qoe optimizer algorithms\"))))".
• Removing quotes may allow a broader search: (( pose estimation algorithms ) or ((( qoe optimized algorithm ) OR ( qoe optimizer algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("pose estimation algorithms") or ((("qoe optimized algorithm") OR ("qoe optimizer algorithms"))))*.