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

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