Perhaps you should try some spelling variations:
thanh trung » thanh tung
khang cong » hang cong, thanh cong, dang cong
tieu sach » chieu sach, dien sach, te sach
trung van » truong van, trong van, trung va
van khang » van khanh, van thanh, van quang
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 - thanh trung van khang cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh trung van khang cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh trung van khang cong san ((toan cau) or (toan ban))*.