Perhaps you should try some spelling variations:
"modified passive convolution algorithms" » "modified passive evolution algorithm", "modified passive solution algorithm", "modified adaptive convolution algorithms"
"modified quantile approximation algorithms" » "modified time approximation algorithms", "modified diophantine approximation algorithms", "modified adaptive 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 passive convolution algorithms") OR ("modified quantile approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified passive convolution algorithms ) or ( modified quantile approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified passive convolution algorithms") or ("modified quantile approximation algorithms"))*.