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