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

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 estimation algorithm\") OR (\"modified robust optimisation algorithmssss\"))~".
• Removing quotes may allow a broader search: (( modified objective estimation algorithm ) OR ( modified robust optimisation algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective estimation algorithm") OR ("modified robust optimisation algorithmssss"))*.