Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » lieu tinh, chau tinh, kieu tinh
trung toan » truong toan, trung tuan, trung tran
thong cong » trong cong, tong cong, thong thong
cong ban » cong bang, cong san, cong tan
ban phan » ban phap, van phan, ban than
phan dau » phan tu, hang dau

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

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