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