Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
tieu sach » chieu sach, dien sach, te sach
dung cong » dung trong
cong danh » cuong danh, cong dan, cong thanh
toan cao » toan ban
toan tap » toan ban
tung va » trung va, tuong va, dung va
va dung » van dung, va duong, vat dung

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) or (chiet tach)) - thanh tung va dung cong danh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (chiet tach)) - thanh tung va dung cong danh ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (chiet tach)) - thanh tung va dung cong danh ((toan cao) or (toan tap))*.