Perhaps you should try some spelling variations:
"modified adam approximation algorithms" » "modified _ approximation algorithms", "modified one approximation algorithms", "modified time approximation algorithms", "modified df approximation algorithms", "modified near approximation algorithms"
"bowler counting methods algorithm" » "bowler nursing methods algorithm", "bowler control methods algorithm", "boiler counting methods algorithm", "towler counting methods algorithm"

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

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