Perhaps you should try some spelling variations:
"mobile learning convolution algorithms" » "mobile learning evolution algorithm", "mobile learning solution algorithm", "machine learning convolution algorithms"
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("mobile learning convolution algorithms") or ("modified notion approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mobile learning convolution algorithms") OR ("modified notion approximation algorithms"))*.
• Removing quotes may allow a broader search: (( mobile learning convolution algorithms ) or ( modified notion approximation algorithms ))*.