Perhaps you should try some spelling variations:
"defined network approximation algorithm" » "defined network approximation algorithms", "designed network approximation algorithm"
"modified motion optimization algorithms" » "modified motion optimisation algorithm", "modified motion estimation algorithms", "modified motion estimation algorithm", "modified policy optimization algorithms", "modified allocation optimization 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: (("defined network approximation algorithm") OR ("modified motion optimization algorithms"))~.
• Removing quotes may allow a broader search: (( defined network approximation algorithm ) or ( modified motion optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("defined network approximation algorithm") or ("modified motion optimization algorithms"))*.