Perhaps you should try some spelling variations:
"modified parameter optimisation algorithm" » "modified parameter optimization algorithm", "modified parameter estimation algorithm", "modified parameter optimization algorithms", "modified parameter estimation algorithms"
"modified location estimation algorithmss" » "modified location estimation algorithms", "modified location estimation algorithm", "modified location optimization algorithms", "modified motion estimation algorithmss", "modified carbon estimation algorithmss"

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 parameter optimisation algorithm") OR ("modified location estimation algorithmss"))~.
• Removing quotes may allow a broader search: (( modified parameter optimisation algorithm ) or ( modified location estimation algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified parameter optimisation algorithm") or ("modified location estimation algorithmss"))*.