Perhaps you should try some spelling variations:
"modified rough approximations algorithms" » "modified rough approximation algorithms", "modified rough approximation algorithm", "modified one 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mapping learning method algorithm\") OR (\"modified rough approximations algorithms\"))~".
• Removing quotes may allow a broader search: (( mapping learning method algorithm ) OR ( modified rough approximations algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("mapping learning method algorithm") OR ("modified rough approximations algorithms"))*.