Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan wang » yuan wang, yan wang, yuhuan huang
binh thang » binh thanh, bin zhang, binh tran
binh thuan » binh thanh, binh tran, dinh tuan
han chang » huang chang, than change, can change
hua han » hua ban, hua chen, hua zhao

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan wang hua han chang ((binh thang) or (binh thuan)) zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan wang hua han chang ((binh thang) OR (binh thuan)) zhi ;.
• Adding a wildcard symbol may retrieve word variants: wang yuhan wang hua han chang ((binh thang) or (binh thuan)) zhi ;*.