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