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"
"model using method algorithm" » "model using mom algorithm", "model nursing methods algorithm", "model focusing method algorithm", "model using metal algorithm", "code using method algorithm", "models nursing method algorithm", "powder using method algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("model using method algorithm") OR ("modified adam approximation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"model using method algorithm\") OR (\"modified adam approximation algorithms\"))*".
• Removing quotes may allow a broader search: (( model using method algorithm ) OR ( modified adam approximation algorithms ))*.