Perhaps you should try some spelling variations:
ratings risk » patients risk
rating risk » trading risk, raising risk, making risk
nu jiang » ru jiang, hua jiang, wu jian
work soc » work so, work some, work s3p
work sex » work six, work self, work sren
wang nu » wang hua, wang hui, wang yue
good » food

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: wang nu jiang good credit ((rating risk) OR (ratings risk)) ((work soc) OR (work sex)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang nu jiang good credit ((rating risk) or (ratings risk)) ((work soc) or (work sex)) ;*.