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

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 motion optimisation algorithm") OR ("modified parameters optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified motion optimisation algorithm ) or ( modified parameters optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified motion optimisation algorithm") or ("modified parameters optimization algorithm"))*.