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 sach » chinh sach, chiet tach, chieu sang
cap thuong » chap thuong, ca thuong, cao thuong
trung cap » truong cao, trung tam
doan phan » doanh phan, toan phan, doanh nhan
dan phan » dan chan, van phan, dam phan

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 sach - thanh trung cap thuong cong ((dan phan) or (doan phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cap thuong cong ((dan phan) OR (doan phan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cap thuong cong ((dan phan) or (doan phan)) cau*.