Perhaps you should try some spelling variations:
burned patient » burned patients, burnt patient, journey patient
patient risk » patients risk, patient task, patient cost
among east » among breast, among ers, among health
yang yang » wang yang, wang yan
yang jun » yang jui, pang jun, yang jin
wang » wing, wan

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 OR lang) yanling ((yang jun) OR (yang yang)) burned patient risk among east ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or lang) yanling ((yang jun) or (yang yang)) burned patient risk among east ;*.