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

Try widening your search to All Fields.

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

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