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