Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
trinh xay » trinh ky
cong vang » cong lang, cong quang, cong ngang
song van » hoang van, trong van, duong van
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 trinh xay dung ((cong vang) or (song van)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh trinh xay dung ((cong vang) OR (song van)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trinh xay dung ((cong vang) or (song van)) toan ban*.