Perhaps you should try some spelling variations:
"modified adamdaptive estimation algorithm" » "modified adaptive estimation algorithm", "modified _damdaptive estimation algorithm", "modified dfdamdaptive estimation algorithm", "modified adamdamdaptive estimation algorithm"
"modified a approximation algorithms" » "modified _ approximation algorithms", "modified one approximation algorithms", "modified time approximation algorithms", "modified df approximation algorithms", "modified adam 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 adamdaptive estimation algorithm") OR ("modified a approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified adamdaptive estimation algorithm ) or ( modified a approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified adamdaptive estimation algorithm") or ("modified a approximation algorithms"))*.