Perhaps you should try some spelling variations:
"modified near approximation algorithms" » "modified one approximation algorithms", "modified network approximation algorithms", "modified _ approximation algorithms", "modified seird approximation algorithms", "modified adam approximation algorithms"
"mapping learning method algorithm" » "machine learning method algorithm", "enabling learning method algorithm", "mapping learning mom algorithm", "mapping learning methods algorithm", "mapping graining methods algorithm", "mapping 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: (("mapping learning method algorithm") OR ("modified near approximation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mapping learning method algorithm\") OR (\"modified near approximation algorithms\"))".
• Removing quotes may allow a broader search: (( mapping learning method algorithm ) OR ( modified near approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("mapping learning method algorithm") OR ("modified near approximation algorithms"))*.