Perhaps you should try some spelling variations:
"modified stochastic optimisation algorithm" » "modified stochastic optimization algorithm", "modified static optimization algorithm", "modified stochastic configuration algorithm", "modified stochastic optimization algorithms", "modified stochastic estimation algorithm", "modified stochastic estimation algorithms"
"modified bi1 approximation algorithms" » "modified time approximation algorithms", "modified _ approximation algorithms", "modified one approximation algorithms"

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 bi1 approximation algorithms\") OR (\"modified stochastic optimisation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified bi1 approximation algorithms ) OR ( modified stochastic optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified bi1 approximation algorithms") OR ("modified stochastic optimisation algorithm"))*.