Perhaps you should try some spelling variations:
"modified adaptive quantization algorithm" » "modified adaptive estimation algorithm", "modified adaptive ventilation algorithm", "modified passive quantization algorithm"
"modified orcad estimation algorithms" » "modified orcad estimation algorithm", "modified orcad optimization algorithms", "modified orcad optimisation algorithm", "modified risk estimation algorithms", "modified orca estimation 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 orcad estimation algorithms") OR ("modified adaptive quantization algorithm"))~.
• Removing quotes may allow a broader search: (( modified orcad estimation algorithms ) or ( modified adaptive quantization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified orcad estimation algorithms") or ("modified adaptive quantization algorithm"))*.