Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
nhung cong » dung cong, thong cong, hang cong
bien tinh » bi tinh, yen tinh, diep tinh
tran tuan » tran xuan, tran quang, tran thanh
cong dan » cong san, cong tan, huong dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam

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

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