Perhaps you should try some spelling variations:
"modified network optimization algorithm" » "modified network optimization algorithms", "modified network optimisation algorithm", "modified network estimation algorithm", "certified network optimization algorithm", "defined network optimization algorithm", "modified near optimization algorithm"
"core using methods algorithm" » "core nursing methods algorithm", "core making methods algorithm", "core counting methods algorithm", "code using methods algorithm", "care nursing methods algorithm"

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

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