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

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

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