Perhaps you should try some spelling variations:
"modified discursive solution algorithm" » "modified discursive evolution algorithm", "modified discursive convolution algorithms", "modified discursive evolutionary algorithm", "modified dispersive solution algorithm"
"modified average approximation algorithms" » "modified coverage approximation 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 discursive solution algorithm") OR ("modified average approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified discursive solution algorithm ) or ( modified average approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified discursive solution algorithm") or ("modified average approximation algorithms"))*.