Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"modified mild solutions algorithms" » "modified mild solution algorithm", "modified mild evolution algorithm", "modified mild convolution algorithms", "modified time solutions algorithms", "modified male solutions algorithms", "modified seird solutions algorithms", "modified bi1 solutions 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 notion approximation algorithms") OR ("modified mild solutions algorithms"))~.
• Removing quotes may allow a broader search: (( modified notion approximation algorithms ) or ( modified mild solutions algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified notion approximation algorithms") or ("modified mild solutions algorithms"))*.