Perhaps you should try some spelling variations:
"verified network optimization algorithms" » "verified network optimisation algorithm", "verified network estimation algorithm", "verified network optimized algorithms", "certified network optimization algorithms", "defined network optimization algorithms"
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimisation algorithm", "modified notion approximation algorithms", "modified motion estimation algorithms"

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 optimization algorithms") or ("modified notion estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("verified network optimization algorithms") OR ("modified notion estimation algorithms")).
• Removing quotes may allow a broader search: (( verified network optimization algorithms ) or ( modified notion estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("verified network optimization algorithms") or ("modified notion estimation algorithms"))*.