Perhaps you should try some spelling variations:
chiet tach » chieu sach
manh tung » manh hung, thanh tung
ho chiet » ho chieu, ho thiet, hoc thiet
da luong » dai luong, do luong, du luong
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
tung da » tung dan, dung da, tang da

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - manh tung da luong ((cong dan) or (cong tac)) thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - manh tung da luong ((cong dan) OR (cong tac)) thanh san*.