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"
"code learning emotion algorithm" » "code learning evolution algorithm", "code learning estimation algorithm", "code learning predation algorithm", "code learning method algorithm", "how learning emotion algorithm"

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

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