Perhaps you should try some spelling variations:
"modified risk optimisation algorithm" » "modified risk optimization algorithms", "modified risk estimation algorithm", "modified risk estimation algorithms", "modified _ optimisation algorithm", "modified bi1 optimisation algorithm"
"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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified adaptive quantization algorithm") or ("modified risk optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified adaptive quantization algorithm") OR ("modified risk optimisation algorithm")).
• Removing quotes may allow a broader search: (( modified adaptive quantization algorithm ) or ( modified risk optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified adaptive quantization algorithm") or ("modified risk optimisation algorithm"))*.