Perhaps you should try some spelling variations:
"modified dfdamdaptive quantization algorithm" » "modified adaptive quantization algorithm", "modified dfdamdaptive estimation algorithm"
"modified orca approximation algorithms" » "modified one approximation algorithms", "modified _ approximation algorithms", "modified time approximation 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 dfdamdaptive quantization algorithm") OR ("modified orca approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified dfdamdaptive quantization algorithm ) or ( modified orca approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified dfdamdaptive quantization algorithm") or ("modified orca approximation algorithms"))*.