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 location optimization algorithm" » "modified location optimization algorithms", "modified location optimisation algorithm", "modified location estimation algorithm", "modified allocation optimization algorithm", "modified static optimization algorithm", "modified carbon optimization algorithm"

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 adam approximation algorithm") OR ("modified location optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified adam approximation algorithm ) or ( modified location optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified adam approximation algorithm") or ("modified location optimization algorithm"))*.