Perhaps you should try some spelling variations:
access patient » access patterns, access point, cross patient
class patient » cross patient, class latin, class parents
stays among » status among
among sex » among smes, among eu
yang jun » yang jui, pang jun, yang jin
yang up » yang jui, tying up, hang ups
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 ((yang up) or (yang jun)) ((class patient) OR (access patient)) stays among sex ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((yang up) OR (yang jun)) ((class patient) OR (access patient)) stays among sex ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yanling ((yang up) or (yang jun)) ((class patient) OR (access patient)) stays among sex ;*".