Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
juan rene » juan meng, juan rana
song ming » song bing, song min, gong min
yan minh » tuan minh, sang minh, yang mind
cong van » congo can, duong van, cong sun
yang yi » yang di, yang xi, yang jui
yi juan » y juan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yi juan rene ((yan minh) or (song ming)) cong van ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yi juan rene ((yan minh) OR (song ming)) cong van ;*.