Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chua xang » chua nang, chuc nang, chu bang
hanh tang » hanh trang, anh tang, hanh mang
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
bang phan » nang phan, bang nhan, bang thanh
tang cua » mang cua, hang cua, tang luan
phan cau » phan dau, phan cac, phan tu

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: cho ((chieu sach) OR (chua xang)) - hanh tang cua ((cong cong) OR (dung cong)) bang phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((chieu sach) or (chua xang)) - hanh tang cua ((cong cong) OR (dung cong)) bang phan cau~".
• Adding a wildcard symbol may retrieve word variants: cho ((chieu sach) or (chua xang)) - hanh tang cua ((cong cong) OR (dung cong)) bang phan cau*.