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 method algorithm" » "model using mom algorithm", "model nursing methods algorithm", "model focusing method algorithm", "model using metal algorithm", "code using method algorithm", "models nursing method algorithm", "powder using method algorithm"

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

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