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