Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
thanh rung » thanh trung, thanh tung, thanh hung
theo dieu » theo tieu, thuoc dieu, he dieu
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
rung cay » dung cay, trung cap, trong cay
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo dieu) or (theo chieu)) hanh - thanh rung cay trong cong ban thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo dieu) OR (theo chieu)) hanh - thanh rung cay trong cong ban thanh cau.
• Adding a wildcard symbol may retrieve word variants: ((theo dieu) or (theo chieu)) hanh - thanh rung cay trong cong ban thanh cau*.