Perhaps you should try some spelling variations:
"parameters estimation algorithmssssssss" » "parameters estimation algorithms", "parameter estimation algorithmssssssss", "parameter estimates algorithmssssssss", "parameter optimization algorithmssssssss"
"notion optimization algorithms" » "notion optimisation algorithm", "notion estimation algorithms", "notion estimation algorithm", "network optimization algorithms", "policy optimization algorithms", "allocation optimization algorithms"

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: (("notion optimization algorithms") OR ("parameters estimation algorithmssssssss"))~.
• Removing quotes may allow a broader search: (( notion optimization algorithms ) or ( parameters estimation algorithmssssssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("notion optimization algorithms") or ("parameters estimation algorithmssssssss"))*.