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 objective optimal algorithm" » "modified objective optimized algorithm", "modified objective optimized algorithms", "modified objective optimizer algorithms"

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 objective optimal algorithm"))~.
• Removing quotes may allow a broader search: (( modified model solution algorithm ) or ( modified objective optimal algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified model solution algorithm") or ("modified objective optimal algorithm"))*.