Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
hien xanh » hien hanh, chieu xanh, hien khanh
tranh cua » doanh cua, manh cua
nong dan » cong dan, nguong dan, huong dan
nong san » cong san, dong san, trong san
toan cao » toan ban, toan tap

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 (hien nhanh)) - hanh tranh cua cong ((nong dan) or (nong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - hanh tranh cua cong ((nong dan) OR (nong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - hanh tranh cua cong ((nong dan) or (nong san)) toan cao*.