Perhaps you should try some spelling variations:
"modified response optimization algorithm" » "modified response optimization algorithms", "modified response optimisation algorithm", "modified response estimation algorithm"
"modified caging approximation algorithms" » "modified one approximation algorithms", "modified time approximation algorithms"

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 response optimization algorithm") OR ("modified caging approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified response optimization algorithm ) or ( modified caging approximation algorithms ))~.
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