Perhaps you should try some spelling variations:
"modified risk optimization algorithms" » "modified risk optimisation algorithm", "modified risk estimation algorithms", "modified risk estimation algorithm", "modified robust optimization algorithms", "modified _ optimization algorithms", "modified game optimization algorithms", "modified bi1 optimization algorithms"
"modified adaptive quantization algorithm" » "modified adaptive estimation algorithm", "modified adaptive ventilation algorithm", "modified passive quantization 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 risk optimization algorithms") OR ("modified adaptive quantization algorithm"))~.
• Removing quotes may allow a broader search: (( modified risk optimization algorithms ) or ( modified adaptive quantization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified risk optimization algorithms") or ("modified adaptive quantization algorithm"))*.