Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
hieu tinh » lieu tinh, kieu tinh, hieu binh
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
cong dan » cong san, cong tan, huong dan
chan cac » chon cac, nhan cach, thanh cac
phan cac » nhan cach, phan dau, phan lap

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

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