Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung luan » truong luan, trung tuan, trung quan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
chu sach » cau sach, thu sach, chieu sach
hau sach » khau sach, cau sach, ham sach
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than 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 ((chu sach) or (hau sach)) - thanh trung luan chung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sach) OR (hau sach)) - thanh trung luan chung cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chu sach) or (hau sach)) - thanh trung luan chung cong dan than cau*.