Perhaps you should try some spelling variations:
"modified bayesian optimisation algorithmss" » "modified bayesian optimisation algorithm", "modified bayesian optimization algorithms", "modified bayesian estimation algorithms", "modified bayesian optimization algorithmss"
"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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified stochastic optimization algorithm") OR ("modified bayesian optimisation algorithmss"))~.
• Removing quotes may allow a broader search: (( modified stochastic optimization algorithm ) or ( modified bayesian optimisation algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified stochastic optimization algorithm") or ("modified bayesian optimisation algorithmss"))*.