Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thieu sach » thien hach, hieu cach, thieu cac
theo sach » thuoc sach, te sach, theo lich
hanh hang » thanh hang, hang hang, hanh han
dong cong » duong cong, dung cong, dang cong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
phan cau » phan dau, phan cac, phan tu
va dong » van dong, ha dong, xa dong

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu sach) OR (theo sach))) OR (chieu sach)) - hanh hang va dong cong doan phan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu sach) or (theo sach))) or (chieu sach)) - hanh hang va dong cong doan phan cau*.