Perhaps you should try some spelling variations:
"attributed optimization algorithmssssssss" » "attributed optimization algorithms", "attribute optimization algorithmssssssss"
"parameters estimation algorithms" » "parameter estimation algorithms", "parameter estimates algorithms", "parameter optimization algorithms", "parameters estimation algorithm", "parameters optimization algorithms", "parameters 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 algorithms") OR ("attributed optimization algorithmssssssss"))~.
• Removing quotes may allow a broader search: (( parameters estimation algorithms ) or ( attributed optimization algorithmssssssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("parameters estimation algorithms") or ("attributed optimization algorithmssssssss"))*.