Perhaps you should try some spelling variations:
ratings risk » patients risk
savings risk » savings cross, savings rate, savings bank
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
yang hua » wang hua, yang hui, ying hua
hua cost » a cost, eu cost, run cost
hong shu » cong shu, tong shui, wong shiu
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 liang yang hua cost ((savings risk) OR (ratings risk)) ((hong shu) or (hong ghi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang yang hua cost ((savings risk) OR (ratings risk)) ((hong shu) OR (hong ghi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yang hua cost ((savings risk) OR (ratings risk)) ((hong shu) or (hong ghi)) ;".
• Adding a wildcard symbol may retrieve word variants: wang liang yang hua cost ((savings risk) OR (ratings risk)) ((hong shu) or (hong ghi)) ;*.