Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
cang trang » cang thang, vang trang, hoang trang
thang cong » thanh cong, thang long, thong cong
trang ban » trong ban, tranh ban, tang ban
ban thang » ban hang, ban thanh, ban than
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu tinh)) - cang trang ban thang cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu tinh)) - cang trang ban thang cong dan phan tu*.