Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhanh lang » nhanh quang, nhanh thang, nhan dang
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan chat » van chat, dan chan, ban chat
chat ban » nhat ban, chat ran, cua ban
lang va » lang van, hang va, lang ha
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: hoc ((chieu sach) or (chiet tach)) - nhanh lang va dung cong dan chat ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - nhanh lang va dung cong dan chat ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chiet tach)) - nhanh lang va dung cong dan chat ban*.