Perhaps you should try some spelling variations:
guan ching » tuan china, yuan chang, yuan cheng
ching wen » ching kwan, ching fein, ching hea
shang kai » shang hai
yan guan » gan guan, yan yuan, yang guang
wen yang » wei yang, wen wang, chen yang
yang kim » yong kim, kang kim, hyung kim
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 yan guan ching wen yang kim ((hong tan) or (shang kai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan guan ching wen yang kim ((hong tan) OR (shang kai)) ;*.