Perhaps you should try some spelling variations:
yihan guan » yan guan
chin wang » china wang, chen wang, chin fang
wang jing » wang ning, wang liang, wang yang
gong meng » gong gang
yan yuan » yan guan, fang yuan, nan yan
wen chin » en chine, je chin
gong min » jong min, song min, song ming

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing ((yihan guan) or (yan yuan)) wen chin wang jing ((gong min) or (gong meng)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing ((yihan guan) OR (yan yuan)) wen chin wang jing ((gong min) OR (gong meng)) ;.
• Adding a wildcard symbol may retrieve word variants: wing ((yihan guan) or (yan yuan)) wen chin wang jing ((gong min) or (gong meng)) ;*.