Perhaps you should try some spelling variations:
"modified objective solution algorithm" » "modified objective evolutionary algorithm", "modified objective allocation algorithm", "modified objective evolution algorithm", "modified objective convolution algorithms"
"verified network approximation algorithms" » "certified network approximation algorithms", "defined network 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: "((\"verified network approximation algorithms\") OR (\"modified objective solution algorithm\"))~".
• Removing quotes may allow a broader search: (( verified network approximation algorithms ) OR ( modified objective solution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("verified network approximation algorithms") OR ("modified objective solution algorithm"))*.