Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
tieu sach » chieu sach, dien sach, te sach
trung cua » truong cua, trung cap, dung cua
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh 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 tieu sach - thanh ((trung cua) or (trung tuan)) dung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh ((trung cua) OR (trung tuan)) dung cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh ((trung cua) or (trung tuan)) dung cong dan chan cau*.