Perhaps you should try some spelling variations:
cleft patients » select patients, les patients, benefit patients
lang yanling » wang yanling, wang yangming, zhang yunling
patients era » patients bela, patients en, patients per
tying up » taking up, tying _
yang jun » yang jui, pang jun, yang jin
era cong » era among

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 ((tying up) or (((yang jun) or (yang di)))) cleft patients era cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yanling ((tying up) OR (((yang jun) OR (yang di)))) cleft patients era cong shu ;.
• Adding a wildcard symbol may retrieve word variants: lang yanling ((tying up) or (((yang jun) or (yang di)))) cleft patients era cong shu ;*.