Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
phung cong » nhung cong, phong cong, nhung chong
doi chieu » doc hieu, doi chi, ho chieu
va phung » va phuong, van phung, va nhung
cong dan » cong san, cong tan, huong dan
chan cao » chan cho, chat cao, toan cao
chay cao » cay cao, chat cao, nha cao
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh tung va phung cong dan ((chan cao) or (chay cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung va phung cong dan ((chan cao) OR (chay cao)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung va phung cong dan ((chan cao) or (chay cao))*.