Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doanh doan » doanh doanh, doanh hoan, doanh nhan
doi chieu » doc hieu, doi chi, ho chieu
van duong » van dong, van dung, van phong
va duong » va tuong, va huong, va dong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cau » phan dau, phan cac, phan tu

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 - doanh doan ((va duong) or (van duong)) cong tac phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - doanh doan ((va duong) OR (van duong)) cong tac phan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - doanh doan ((va duong) or (van duong)) cong tac phan cau*.