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