Perhaps you should try some spelling variations:
patients links » patients clients, patients final
patients risk » patient risk, patients si, patients view
wing yanling » wang yanling, wang yangming
tying up » taking up, tying _
yang jin » yang jie, yang jun, ying jin
gong hui » tong hui, tong shui, wang hui

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: wing yanling ((tying up) OR (yang jin)) cost ((patients risk) OR (patients links)) gong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yanling ((tying up) or (yang jin)) cost ((patients risk) OR (patients links)) gong hui ;~".
• Adding a wildcard symbol may retrieve word variants: wing yanling ((tying up) or (yang jin)) cost ((patients risk) OR (patients links)) gong hui ;*.