Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
thanh cac » hanh cac, thanh bac, thanh ca
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh

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 - hanh trinh ((cua ban) OR (cua nhung)) ((cong dan) OR (cong tan)) thanh cac~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh ((cua ban) or (cua nhung)) ((cong dan) or (cong tan)) thanh cac*.