Perhaps you should try some spelling variations:
"certified network approximation algorithm" » "certified network approximation algorithms", "verified network approximation algorithm"
"modified learning convolution algorithm" » "modified learning convolution algorithms", "modified learning evolution algorithm", "modified learning solution algorithm", "mobile learning convolution algorithm", "modified caging convolution algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified learning convolution algorithm") OR ("certified network approximation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified learning convolution algorithm\") OR (\"certified network approximation algorithm\"))".
• Removing quotes may allow a broader search: (( modified learning convolution algorithm ) OR ( certified network approximation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified learning convolution algorithm") OR ("certified network approximation algorithm"))*.