Perhaps you should try some spelling variations:
"parameters estimation algorithmssssss" » "parameters estimation algorithm", "parameter estimation algorithmssssss", "parameter estimates algorithmssssss", "parameter optimization algorithmssssss", "parameters estimation algorithmsssss", "parameters optimization algorithmssssss", "parameters optimisation algorithmsssss"
"attributes estimation algorithms" » "attribute optimization algorithms", "attributes estimation algorithm", "attributes optimization algorithms", "attributes optimisation algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("parameters estimation algorithmssssss") OR ("attributes estimation algorithms"))~.
• Removing quotes may allow a broader search: (( parameters estimation algorithmssssss ) or ( attributes estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("parameters estimation algorithmssssss") or ("attributes estimation algorithms"))*.