Perhaps you should try some spelling variations:
"parameters optimization algorithmss" » "parameters optimisation algorithm", "parameters estimation algorithms", "parameters estimation algorithm", "parameter optimization algorithmss", "parameter estimation algorithmss", "parameters optimisation algorithms", "parameters estimation algorithmss"
"sphere optimization algorithms" » "sphere optimisation algorithm", "sphere estimation algorithms", "sphere estimation algorithm", "stage optimization algorithms", "response optimization algorithms"

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 algorithmss") OR ("sphere optimization algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"parameters optimization algorithmss\") OR (\"sphere optimization algorithms\"))".
• Removing quotes may allow a broader search: (( parameters optimization algorithmss ) OR ( sphere optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("parameters optimization algorithmss") OR ("sphere optimization algorithms"))*.