Perhaps you should try some spelling variations:
"modified allocation estimation algorithms" » "modified allocation optimization algorithms", "modified motion estimation algorithms", "modified allocation estimation algorithm", "modified allocation optimisation algorithm"
"modified robust estimation algorithms" » "modified robust estimation algorithm", "modified robust optimization algorithms", "modified robust optimisation algorithm", "modified pose estimation algorithms", "modified risk estimation 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 allocation estimation algorithms") OR ("modified robust estimation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified allocation estimation algorithms\") OR (\"modified robust estimation algorithms\"))".
• Removing quotes may allow a broader search: (( modified allocation estimation algorithms ) OR ( modified robust estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified allocation estimation algorithms") OR ("modified robust estimation algorithms"))*.