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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified robust estimation algorithms") OR ("modified objective allocation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified robust estimation algorithms\") OR (\"modified objective allocation algorithms\"))*".
• Removing quotes may allow a broader search: (( modified robust estimation algorithms ) OR ( modified objective allocation algorithms ))*.