Perhaps you should try some spelling variations:
ratings risk » patients risk
patient risk » patients risk, patient task, patient cost
bring what » doing what, brief what, going what
yang bond » bank bond, long bond, yang mind
dan yang » daun yang, tan yang, wang yang
yan dan » dan dana, yan clan, yan guan
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan dan yang bond ((ratings risk) or (patient risk)) bring what ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan dan yang bond ((ratings risk) OR (patient risk)) bring what ;*.