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