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