Perhaps you should try some spelling variations:
"modified coverage approximation algorithms" » "modified average approximation algorithms"
"modified blind classification algorithm" » "modified using classification algorithm", "modified binary classification algorithm", "modified class classification algorithm", "modified bi1 classification algorithm", "modified seird classification 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: "((\"modified coverage approximation algorithms\") OR (\"modified blind classification algorithm\"))~".
• Removing quotes may allow a broader search: (( modified coverage approximation algorithms ) OR ( modified blind classification algorithm ))~.
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