Perhaps you should try some spelling variations:
cost patients » cleft patients, care patients, des patients
lang yanling » wang yanling, wang yangming, zhang yunling
cost patient » cross patient, courts patient, class patient
how slum » how slow, how sub, how sun
yang up » yang jui, tying up, yang jun
si how » ii how, vi how

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 judy)) ((cost patients) OR (cost patient)) si how slum ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yanling ((yang up) OR (yang judy)) ((cost patients) OR (cost patient)) si how slum ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yanling ((yang up) or (yang judy)) ((cost patients) OR (cost patient)) si how slum ;*".