Perhaps you should try some spelling variations:
"parameter optimisation algorithm" » "parameter optimization algorithms", "parameter estimation algorithm", "parameter estimation algorithms", "parameter optimization algorithm"
"parameters estimation algorithmssssssssssssss" » "parameter estimation algorithmssssssssssssss", "parameter estimates algorithmssssssssssssss", "parameter optimization algorithmssssssssssssss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("parameters estimation algorithmssssssssssssss") OR ("parameter optimisation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"parameters estimation algorithmssssssssssssss\") OR (\"parameter optimisation algorithm\"))".
• Removing quotes may allow a broader search: (( parameters estimation algorithmssssssssssssss ) OR ( parameter optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("parameters estimation algorithmssssssssssssss") OR ("parameter optimisation algorithm"))*.