Perhaps you should try some spelling variations:
"modified robust estimation algorithmss" » "modified robust estimation algorithm", "modified robust optimization algorithms", "modified robust estimation algorithms", "modified robust optimization algorithmss", "modified robust optimisation algorithms", "modified pose estimation algorithmss", "modified risk estimation algorithmss"
"modified objective estimation algorithms" » "modified objective estimation algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective allocation algorithms"

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