Perhaps you should try some spelling variations:
"modified rough approximations algorithms" » "modified rough approximation algorithms", "modified rough approximation algorithm", "modified one approximation algorithms"
"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 rough approximations algorithms") or ("modified stochastic optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified rough approximations algorithms") OR ("modified stochastic optimization algorithm")).
• Removing quotes may allow a broader search: (( modified rough approximations algorithms ) or ( modified stochastic optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified rough approximations algorithms") or ("modified stochastic optimization algorithm"))*.