Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
dong cong » duong cong, dung cong, dang cong
thu sach » tu sach, thuat sach, thuoc sach
tang cua » mang cua, hang cua, tang luan
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cau » toan cau, doan dau, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (thu sach)) - hanh tang cua dong cong tac doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (thu sach)) - hanh tang cua dong cong tac doan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (thu sach)) - hanh tang cua dong cong tac doan cau*.