Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, cong dong
chan cap » khan cap, cao cap, phan cac
than cap » khan cap, thanh lap, thanh cac

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 - thanh trung cua nhung ((cong dan) OR (huong dan)) ((chan cap) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - thanh trung cua nhung ((cong dan) or (huong dan)) ((chan cap) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung cua nhung ((cong dan) or (huong dan)) ((chan cap) OR (than cap))*.