Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
hanh cong » thanh cong, hang cong, hanh dong
cong phan » cong nhan, cong khan, chong phap
phan cong » thanh cong
dang van » hoang van, hang va
dung dat » dung va, dung tai
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu sach - hanh cong phan cong ((dang van) or (dung dat)) phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu sach - hanh cong phan cong ((dang van) OR (dung dat)) phan lap.
• Adding a wildcard symbol may retrieve word variants: toc chieu sach - hanh cong phan cong ((dang van) or (dung dat)) phan lap*.