Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
doi chieu » doc hieu, doi chi, ho chieu
anh quang » anh xquang, anh quan, nhanh quang
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
cua dung » cua dang, cua dong, qua dung
toan ban » van ban

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 - ((hanh trang) or (anh quang)) cua dung cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh trang) OR (anh quang)) cua dung cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((hanh trang) or (anh quang)) cua dung cong tinh toan ban*.