Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hien xanh » hien hanh, hien nhanh, chieu xanh
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
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) or (hieu lang)) - hanh tranh cua nhung ((cong dan) or (cong tac)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hieu lang)) - hanh tranh cua nhung ((cong dan) OR (cong tac)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hieu lang)) - hanh tranh cua nhung ((cong dan) or (cong tac)) toan ban*.