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