Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong huong » cong thuong, cong luong, cong hung
thanh chau » thanh cha, thanh cham, thanh chu
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
hoc hiem » hoc hien, hoc thiet, hoc nhiet
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 hiem) OR (hoc thieu)) ngan - thanh trung cua cong huong dan ((thanh chau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hiem) OR (hoc thieu)) ngan - thanh trung cua cong huong dan ((thanh chau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hiem) OR (hoc thieu)) ngan - thanh trung cua cong huong dan ((thanh chau) or (than cap))*.