Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trung cap » truong cao, trung tam
cong vang » cong lang, cong quang, cong ngang
cap tang » cao tang, ca tang, cap bang
cong van » cong san, song van, cong tan
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: doi chieu sach - thanh trung cap tang ((cong van) or (cong vang)) ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung cap tang ((cong van) OR (cong vang)) ban cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung cap tang ((cong van) or (cong vang)) ban cau*.