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