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

Try widening your search to All Fields.

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