Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
chuc hach » chuc hanh, thuc hanh, chuc danh
tung quan » tuong quan, trung quan, dung quan
quan hang » quan hoang, quan lang, quan hanh
hang cong » dang cong, hang nong, bang cong
ban chan » dan chan, ban than, ban can
ban nhan » ban than, van nhan, ban thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc hach) or (chieu sach)) - thanh tung quan hang cong ((ban chan) OR (ban nhan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc hach) OR (chieu sach)) - thanh tung quan hang cong ((ban chan) OR (ban nhan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc hach) or (chieu sach)) - thanh tung quan hang cong ((ban chan) OR (ban nhan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc hach) or (chieu sach)) - thanh tung quan hang cong ((ban chan) OR (ban nhan)) cau*.