Perhaps you should try some spelling variations:
"parameter optimization algorithms" » "parameter optimisation algorithm", "parameter estimation algorithms", "parameter estimation algorithm", "parameters optimization algorithms"
"same optimization algorithmssssssssss" » "same optimisation algorithmsssssssss", "same estimation algorithmssssssssss", "same estimation algorithmsssssssss", "game optimization algorithmssssssssss", "stage optimization algorithmssssssssss", "qoe optimization algorithmssssssssss"

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

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