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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimisation algorithm\") OR (\"modified robust optimisation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified objective optimisation algorithm ) OR ( modified robust optimisation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimisation algorithm") OR ("modified robust optimisation algorithms"))*.