Perhaps you should try some spelling variations:
patients risk » patient risk, patients links, patients si
cost patients » cost patient, cleft patients, care patients
lang yanling » wang yanling, wang yangming, zhang yunling
yang jui » yang judy, yang di, yang xi
how slum » how slow, how sub, how sun
yang up » tying up, yang jun, hang ups

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yanling ((yang up) OR (yang jui)) cost patients risk how slum ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yanling ((yang up) OR (yang jui)) cost patients risk how slum ;*".