Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
tran tuan » tran xuan, tran quang, tran thanh
tung tam » trung tam, dung tam, tuong tac
vung tam » vung tau, vung tay, trung tam
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu tinh) or (diep tinh)) - thanh ((tung tam) OR (vung tam)) nhung cong tan tran tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (diep tinh)) - thanh ((tung tam) OR (vung tam)) nhung cong tan tran tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (diep tinh)) - thanh ((tung tam) OR (vung tam)) nhung cong tan tran tuan".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (diep tinh)) - thanh ((tung tam) OR (vung tam)) nhung cong tan tran tuan*.