Perhaps you should try some spelling variations:
"modified response approximation algorithms" » "modified one approximation algorithms", "modified response association algorithms"
"modified parameter optimized algorithms" » "modified parameter optimized algorithm", "modified parameter optimizer algorithms", "modified parameter optimization 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 approximation algorithms") OR ("modified parameter optimized algorithms"))~.
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