Perhaps you should try some spelling variations:
"modified objective optimisation algorithms" » "modified objective optimisation algorithm", "modified objective optimization algorithms", "modified objective estimation algorithms", "modified multiobjective optimization algorithms"
"modified stochastic optimization algorithm" » "modified stochastic optimization algorithms", "modified stochastic optimisation algorithm", "modified stochastic estimation 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 stochastic optimization algorithm\") OR (\"modified objective optimisation algorithms\"))~".
• Removing quotes may allow a broader search: (( modified stochastic optimization algorithm ) OR ( modified objective optimisation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified stochastic optimization algorithm") OR ("modified objective optimisation algorithms"))*.