Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh sang » anh sang, hanh mang, lanh sang
dong cong » duong cong, dung cong, dang cong
hanh san » thanh san, khach san, thanh son
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((hanh sang) or (hanh san)) cua dong cong dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh sang) OR (hanh san)) cua dong cong dan can cau*.