Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
nhat tuan » nhat tan, nhat trang, nhat quang
nhat toan » nhat tan, thuat toan, nhat trang

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

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