Perhaps you should try some spelling variations:
huang weng » huang cheng, huang jing, huang ting
yang weng » yang yang, yang jing
fang hai » dang hai, shang hai, eang hay
qian yan » qian jun, qian yi
yan yuan » yan guan, fang yuan, yan clan
nan yan » nan ya, wang yan, dan yang
wan yan » wang yan, wai yan, wang yang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan ((yan yuan) OR (((nan yan) OR (qian yan)))) gain ((yang weng) OR (huang weng)) fang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan ((yan yuan) or (((nan yan) or (qian yan)))) gain ((yang weng) OR (huang weng)) fang hai ;~".
• Adding a wildcard symbol may retrieve word variants: wan yan ((yan yuan) or (((nan yan) or (qian yan)))) gain ((yang weng) OR (huang weng)) fang hai ;*.