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