Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh trung » thanh tung
cua thuong » cua truong, cua phuong, ca thuong
ban thanh » ban hanh, ban hang
thanh cao » thanh ca, thanh cac, thanh thao
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
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 chu sach - ((thanh trung) or (canh tranh)) cua thuong cong ban thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((thanh trung) OR (canh tranh)) cua thuong cong ban thanh cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((thanh trung) or (canh tranh)) cua thuong cong ban thanh cao*.