Perhaps you should try some spelling variations:
yang july » yang judy, yang jun
song ming » song bing, song min, gong min
ming cong » minh cong, ming kong, ming code
yang jui » yang judy, yang di, yang yi
jin song » jie song, john song, kim song
cong van » congo can, duong van, cong sun
yang xi » yang di, yang yi
wang » wing, wan, lang

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

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