Perhaps you should try some spelling variations:
patient stays » patient study, patient als, patient meals
cost patient » cross patient, courts patient, class patient
stays among » status among
among sri » among sex, among di, among ers
yang jun » yang jui, pang jun, yang jin
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 yanling ((hang ups) or (yang jun)) cost patient stays among sri ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((hang ups) OR (yang jun)) cost patient stays among sri ;*.