Perhaps you should try some spelling variations:
"modified adam approximation algorithm" » "modified adam approximation algorithms", "modified _ approximation algorithm", "modified one approximation algorithm", "modified time approximation algorithm", "modified df approximation algorithm", "modified near approximation algorithm"
"mobile learning method algorithm" » "mobile learning mom algorithm", "machine learning method algorithm", "mobile learning methods algorithm", "mobile graining methods algorithm", "mobile learning emotion algorithm"

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 method algorithm") or ("modified adam approximation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mobile learning method algorithm") OR ("modified adam approximation algorithm")).
• Removing quotes may allow a broader search: (( mobile learning method algorithm ) or ( modified adam approximation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("mobile learning method algorithm") or ("modified adam approximation algorithm"))*.