Perhaps you should try some spelling variations:
"modified orca approximation algorithm" » "modified _ approximation algorithm", "modified time approximation algorithm", "modified rough approximations algorithm"
"modified one approximation algorithms" » "modified time approximation algorithms", "modified _ approximation algorithms", "modified rough approximations algorithms", "modified male approximation algorithms", "modified near approximation algorithms"

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

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