Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"modified nodal evolution algorithm" » "modified nodal solution algorithm", "modified nodal evolutionary algorithm", "modified nodal convolution algorithms", "modified global evolution algorithm", "modified legal revolution algorithm", "modified adam evolution algorithm", "modified near evolution algorithm"

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 nodal evolution algorithm") OR ("modified notion approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified nodal evolution algorithm ) or ( modified notion approximation algorithms ))~.
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