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