Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tran » hanh trang, thanh tran, hanh tram
cong vang » cong lang, cong quang, cong ngang
ho chieu » theo chieu, hoc thieu, doi chieu
tran xay » tra xay, tran day, trinh xay
song van » hoang van, trong van, duong van
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh tran xay dung ((cong vang) or (song van)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tran xay dung ((cong vang) OR (song van)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tran xay dung ((cong vang) or (song van)) toan tap*.