Perhaps you should try some spelling variations:
thien thanh » tien thanh, hien hanh, chien tranh
thanh trung » thanh tung
trung cap » truong cao, trung tam
cap khong » cat khong, chap phong, va khong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap

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 thanh) OR (thi thanh)) - thanh trung cap khong ((cong dan) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (thi thanh)) - thanh trung cap khong ((cong dan) OR (cong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) OR (thi thanh)) - thanh trung cap khong ((cong dan) or (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) OR (thi thanh)) - thanh trung cap khong ((cong dan) or (cong san)) than cau*.