Perhaps you should try some spelling variations:
"modified adam approximation algorithm" » "modified adam approximation algorithms", "modified _ approximation algorithm", "modified one approximation algorithm", "modified time approximation algorithm", "modified df approximation algorithm", "modified near approximation algorithm"
"modified quadratic optimisation algorithm" » "modified quadratic optimization algorithm", "modified quadratic optimization algorithms", "modified quadratic estimation algorithm", "modified quadratic estimation 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 adam approximation algorithm") OR ("modified quadratic optimisation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adam approximation algorithm\") OR (\"modified quadratic optimisation algorithm\"))".
• Removing quotes may allow a broader search: (( modified adam approximation algorithm ) OR ( modified quadratic optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified adam approximation algorithm") OR ("modified quadratic optimisation algorithm"))*.