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 predation algorithm" » "modified objective allocation algorithm", "modified objective predators algorithm", "modified objective estimation algorithm"

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