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
trinh han » trinh quan
han nhung » hanh nhung, hon nhung, ban nhung
cong dan » cong san, cong dong, cong tac
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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 han nhung ((((cong dan) OR (huong dan))) OR (cong tan)) toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh han nhung ((((cong dan) or (huong dan))) or (cong tan)) toan cau*.