Perhaps you should try some spelling variations:
thanh huong » thanh hung, thanh cong, anh huong
thanh tuong » thanh thuong, thanh tung, thanh cuong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
va duong » van duong, va tuong, va huong
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - ((thanh tuong) OR (thanh huong)) va duong ((cong san) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((thanh tuong) OR (thanh huong)) va duong ((cong san) OR (cong tac)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((thanh tuong) OR (thanh huong)) va duong ((cong san) or (cong tac)) toan cao*".