Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien quan » trien quang, lien quan, thien van
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
cong ban » cong bang, cong san, cong tan
ban khan » ban than, ban nhan, ban chan
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: hoc ((thien quan) or (tuyen dung)) - thanh trung ((cua khong) OR (hua khong)) cong ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien quan) OR (tuyen dung)) - thanh trung ((cua khong) OR (hua khong)) cong ban khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien quan) or (tuyen dung)) - thanh trung ((cua khong) OR (hua khong)) cong ban khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien quan) or (tuyen dung)) - thanh trung ((cua khong) OR (hua khong)) cong ban khan cap*.