Perhaps you should try some spelling variations:
"risk optimization algorithmss" » "risk optimisation algorithm", "risk estimation algorithms", "risk estimation algorithm", "risk optimisation algorithms", "risk estimation algorithmss", "robust optimization algorithmss", "_ optimization algorithmss", "game optimization algorithmss"
"parameters optimization algorithms" » "parameter optimization algorithms", "parameter estimation algorithms", "parameters optimisation algorithm", "parameters estimation algorithms", "parameters estimation algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("parameters optimization algorithms") or ("risk optimization algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("parameters optimization algorithms") OR ("risk optimization algorithmss")).
• Removing quotes may allow a broader search: (( parameters optimization algorithms ) or ( risk optimization algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("parameters optimization algorithms") or ("risk optimization algorithmss"))*.