Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh hanh » hanh han, xanh hanh, nhanh thanh
cong dan » cong san, cong dong, cong tac
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
hanh va » hang va, hanh vi
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh hanh va hang ((((cong dan) or (cong tan))) or (huong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh hanh va hang ((((cong dan) OR (cong tan))) OR (huong dan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh hanh va hang ((((cong dan) or (cong tan))) or (huong dan)) toan ban*.