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