Perhaps you should try some spelling variations:
"modified model solution algorithm" » "modified model evolution algorithm", "modified model convolution algorithms", "modified model evolutionary algorithm", "modified male solution algorithm", "modified model solutions algorithm", "modified nodal solution algorithm", "modified model selection algorithm"
"modified network estimation algorithm" » "modified network optimization algorithm", "certified network estimation algorithm", "defined network estimation algorithm", "modified near estimation 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 model solution algorithm") OR ("modified network estimation algorithm"))~.
• Removing quotes may allow a broader search: (( modified model solution algorithm ) or ( modified network estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified model solution algorithm") or ("modified network estimation algorithm"))*.