Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
thanh chau » thanh cha, thanh cham, thanh chu
hoc thieu » toc thieu, hoc hien
cong bang » cuong bang, dong bang, hong bang
tung cua » trung cua, tuong cua, dung cua
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac

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: hoc thieu xanh - thanh tung cua dong ((cong bang) OR (cong san)) ((thanh chau) OR (than cap))~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung cua dong ((cong bang) or (cong san)) ((thanh chau) or (than cap))*.