Perhaps you should try some spelling variations:
"verified network optimization algorithm" » "verified network optimization algorithms", "verified network optimisation algorithm", "verified network estimation algorithm", "certified network optimization algorithm", "defined network optimization algorithm"
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified motion 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 notion estimation algorithms") or ("verified network optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified notion estimation algorithms") OR ("verified network optimization algorithm")).
• Removing quotes may allow a broader search: (( modified notion estimation algorithms ) or ( verified network optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified notion estimation algorithms") or ("verified network optimization algorithm"))*.