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