Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trong » hanh trang, anh trong, hinh trong
nguong dan » huong dan
hoc chieu » hoc thieu, ho chieu, hoc hien
trong van » trong cac
van thanh » ban thanh, van tuan
cong dan » cong san, cong tan, huong dan
than ban » thanh ban, toan ban, than man

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 chieu xanh - hanh trong van thanh ((nguong dan) OR (cong dan)) than ban~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh trong van thanh ((nguong dan) or (cong dan)) than ban*.