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