Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
anh bang » anh hoang, anh quang, tinh bang
anh dang » anh dong, anh dung, anh danh
va thong » va thuong, va phuong, he thong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - ((anh bang) or (anh dang)) va thong cong ((dan than) OR (dan chan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((anh bang) OR (anh dang)) va thong cong ((dan than) OR (dan chan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((anh bang) or (anh dang)) va thong cong ((dan than) OR (dan chan)) ban*".