Perhaps you should try some spelling variations:
wang yidan » wang yan
duong van » duong anh
song ming » song bing, song min, gong min
wing ian » wing tan, twinn ian, wing sun
cong van » congo can, cong sun
clan yan » qian yan, nan yan
yan wang » yuan wang, yang yang, qian wang
qian yi » qian yan

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: ((wing ian) OR (((cong van) OR (duong van)))) ((clan yan) OR (qian yi)) yan wang yidan song ming ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing ian) or (((cong van) OR (duong van)))) ((clan yan) or (qian yi)) yan wang yidan song ming ;~".
• Adding a wildcard symbol may retrieve word variants: ((wing ian) or (((cong van) OR (duong van)))) ((clan yan) or (qian yi)) yan wang yidan song ming ;*.