Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh nang » anh nang, ganh nang, hanh mang
quan hang » quan hoang, quan lang, qua hang
quan hanh » quan thanh, quang thanh, quang khanh
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan ban » van ban

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 nang ((quan hang) OR (quan hanh)) ((cong dan) or (cong tac)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh nang ((quan hang) OR (quan hanh)) ((cong dan) OR (cong tac)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh nang ((quan hang) OR (quan hanh)) ((cong dan) or (cong tac)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh nang ((quan hang) OR (quan hanh)) ((cong dan) or (cong tac)) toan ban*.