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 approximation algorithms" » "certified network approximation algorithms", "defined network approximation algorithms", "modified near approximation algorithms"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified network approximation algorithms\") OR (\"modified model solution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified network approximation algorithms ) OR ( modified model solution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified network approximation algorithms") OR ("modified model solution algorithm"))*.