Perhaps you should try some spelling variations:
costs ratings » costs savings, costs creating, cost savings
ratings risk » patients risk
wang wang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang, wang yanling
yang muxi » yang jui, yang xi, yang hui
gong hui » tong hui, tong shui, wang hui
hong ghi » zhong zhi, hong g, hong hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang yang muxi costs ratings risk ((gong hui) or (hong ghi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yang muxi costs ratings risk ((gong hui) OR (hong ghi)) ;.
• Adding a wildcard symbol may retrieve word variants: wang wang yang muxi costs ratings risk ((gong hui) or (hong ghi)) ;*.