Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
khong cong » thong cong, khong cang, chong cong
hien xanh » hien hanh, hien nhanh, hien khanh
trung cap » truong cao, trung tam
cap khong » cat khong, chap phong, va khong
van thanh » van tuan
ban thanh » ban hanh, ban hang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - thanh trung cap khong cong ((van thanh) OR (ban thanh)) mau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - thanh trung cap khong cong ((van thanh) or (ban thanh)) mau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - thanh trung cap khong cong ((van thanh) or (ban thanh)) mau*.