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