Perhaps you should try some spelling variations:
"write optimization algorithmss" » "write optimisation algorithm", "write estimation algorithms", "write estimation algorithm", "write optimisation algorithms", "write estimation algorithmss", "game optimization algorithmss", "qoe optimization algorithmss", "stage 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.

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