Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, dien thanh
tien thanh » tien thinh, tran thanh, den thanh
tranh cua » manh cua
doanh cua » doanh luan
hang nong » thang long, han tong
nong dan » cong dan, nong san, nguong dan
dan hanh » dang hanh, dan khanh, dan thanh
hanh tu » anh tu, danh tu

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 nhanh) OR (tien thanh)) - hanh ((tranh cua) or (doanh cua)) hang nong dan hanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (tien thanh)) - hanh ((tranh cua) OR (doanh cua)) hang nong dan hanh tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (tien thanh)) - hanh ((tranh cua) or (doanh cua)) hang nong dan hanh tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (tien thanh)) - hanh ((tranh cua) or (doanh cua)) hang nong dan hanh tu*.