Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh cua » trinh cua, sinh cua, tinh chat
cua dung » cua dang, cua dong, qua dung
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac

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 (chieu tinh)) - hanh tinh cua dung ((cong ban) OR (cong san)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (chieu tinh)) - hanh tinh cua dung ((cong ban) OR (cong san)) than cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) or (chieu tinh)) - hanh tinh cua dung ((cong ban) OR (cong san)) than cap*".