Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
trung gap » trung cap, trung gay, trung lap
gap trong » ap trong, gay trong, lap trong
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » hoc thieu, doi chieu, mot chieu
cong van » cong vang, song van, cong tan
cong san » cong tac

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: ((theo chieu) OR (ho chieu)) tinh - thanh trung gap trong ((cong van) OR (cong san)) thanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) tinh - thanh trung gap trong ((cong van) or (cong san)) thanh cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) tinh - thanh trung gap trong ((cong van) or (cong san)) thanh cau*.