Perhaps you should try some spelling variations:
"verified network approximation algorithm" » "verified network approximation algorithms", "certified network approximation algorithm", "defined network approximation algorithm"
"modified adaptive estimation algorithm" » "modified adaptive ventilation algorithm", "modified quantile estimation algorithm", "modified adaptive quantization algorithm", "modified passive estimation algorithm"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("verified network approximation algorithm") or ("modified adaptive estimation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("verified network approximation algorithm") OR ("modified adaptive estimation algorithm")).
• Removing quotes may allow a broader search: (( verified network approximation algorithm ) or ( modified adaptive estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("verified network approximation algorithm") or ("modified adaptive estimation algorithm"))*.