Perhaps you should try some spelling variations:
theo dien » theo tieu, thu dien, thuy dien
dien sach » dien anh
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 ban » van ban, can ban, dan ba
ban cau » bang cau, ban can, van 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 dien sach - ((hanh sang) or (hanh san)) cua dong cong dan ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dien sach - ((hanh sang) OR (hanh san)) cua dong cong dan ban cau*.