Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
ha thuong » han thuong, hai thuong, va thuong
trung ha » trung hoc, trung tam, trung cap
dan hanh » dang hanh, dan khanh, dan thanh
ban hanh » ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - thanh trung ha thuong cong ((dan hanh) or (ban hanh)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh trung ha thuong cong ((dan hanh) OR (ban hanh)) cac*.