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 response estimation algorithm" » "modified response optimization algorithm", "modified pose estimation algorithm", "modified response association algorithm"

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