Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, te sach
cua nhung » va nhung
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((thanh trung) or (thanh cong)) cua nhung cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((thanh trung) OR (thanh cong)) cua nhung cong san than cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((thanh trung) or (thanh cong)) cua nhung cong san than cau*.