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

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

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