Perhaps you should try some spelling variations:
chiet tach » chieu sach
trung tuan » trung thanh, trung tam, truong thanh
phung cong » nhung cong, phong cong, nhung chong
trong tuan » trong quan, trong tan, trang tuan
tran tuan » tran xuan, tran quang, tran thanh
ho chiet » ho chieu, ho thiet, hoc thiet
cong san » cong tac
tran tan » tran van, tran thanh, trang tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh ((trung tuan) or (tran tuan)) phung cong san ((tran tan) or (trong tuan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh ((trung tuan) OR (tran tuan)) phung cong san ((tran tan) OR (trong tuan)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh ((trung tuan) or (tran tuan)) phung cong san ((tran tan) or (trong tuan))*.