Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh hang » thanh hang, hang hang, hanh han
va phuong » va thuong, cac phuong
cong dan » cong san, huong dan, cong dong
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
han tap » han tai, toan tap, nhan tai

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 hang va phuong ((cong dan) or (((cong tan) or (cong tac)))) han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh hang va phuong ((cong dan) OR (((cong tan) OR (cong tac)))) han tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh hang va phuong ((cong dan) or (((cong tan) or (cong tac)))) han tap*.