Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cap » truong cao, trung tam
cong doan » cong hoan, dong doanh, cong san
cap cong » cac cong, cao cong, tap cong
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau

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 (dieu hanh)) - thanh trung cap cong ((cong doan) or (cong dan)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (dieu hanh)) - thanh trung cap cong ((cong doan) OR (cong dan)) phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (dieu hanh)) - thanh trung cap cong ((cong doan) or (cong dan)) phan dau*.