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"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified seird convolution algorithms") or ("modified orcadmplexity approximation algorithms"))~.
• 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"))*.