Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
dan than » dan chan, dan toan, dang thanh
van than » van thanh, van thang, van tuan
ban than » ban thanh, van thanh, 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 tieu sach - anh tang cua dung cong ((dan than) or (((van than) or (ban than)))) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - anh tang cua dung cong ((dan than) OR (((van than) OR (ban than)))) cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - anh tang cua dung cong ((dan than) or (((van than) or (ban than)))) cao*.