Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
thanh van » thanh dam, thanh vu
chen yang » chen rong
yuan hui » yuan fei, tuan hua, yang hui
yang thi » dang thi, yang chik, yang di
thi tong » thi hong, thi mong, cho tong
tong hui » wang hui

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: wang yang ((thanh van) OR (((yuan hui) OR (jaan hui)))) chen yang thi tong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang ((thanh van) or (((yuan hui) OR (jaan hui)))) chen yang thi tong hui ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang ((thanh van) or (((yuan hui) OR (jaan hui)))) chen yang thi tong hui ;*.