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

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

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