Perhaps you should try some spelling variations:
"parameter estimation algorithm" » "parameter estimates algorithm", "parameter optimization algorithm"
"_ optimized algorithm" » "_ optimized algorithms", "_ optimizer algorithms"
"_ optimise algorithms" » "_ optimized algorithms", "_ optimizer algorithms", "_ optimize algorithms"

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

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