Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh huong, thanh cuong
thanh tung » thanh cong
thanh chau » thanh cha, thanh cham, thanh chu
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
dong van » duong van, dang van, dong va
dong von » dung von, dong co, dong hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((thanh tuong) or (thanh tung)) cua cong ((dong van) OR (dong von)) thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((thanh tuong) OR (thanh tung)) cua cong ((dong van) OR (dong von)) thanh chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((thanh tuong) or (thanh tung)) cua cong ((dong van) OR (dong von)) thanh chau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((thanh tuong) or (thanh tung)) cua cong ((dong van) OR (dong von)) thanh chau*.