Perhaps you should try some spelling variations:
"modified bi1 approximation algorithm" » "modified time approximation algorithm", "modified _ approximation algorithm"
"modified one approximation algorithms" » "modified time approximation algorithms", "modified _ approximation algorithms", "modified rough approximations algorithms", "modified male approximation algorithms", "modified near approximation algorithms", "modified orca approximation algorithms"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified bi1 approximation algorithm") OR ("modified one approximation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified bi1 approximation algorithm\") OR (\"modified one approximation algorithms\"))".
• Removing quotes may allow a broader search: (( modified bi1 approximation algorithm ) OR ( modified one approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified bi1 approximation algorithm") OR ("modified one approximation algorithms"))*.