Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
chau tinh » cuu tinh, ha tinh, cac tinh
cua tinh » cua sinh, va tinh, ha tinh
trung va » truong va, trang va, trung ha
trong ty » trong ky, trong ly, trong tu
toan ban » van ban
va dung » van dung, va duong, vat dung
ty toan » ly toan, tap toan, huy toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((chau tinh) OR (cua tinh))) or (chieu sach)) - thanh trung va dung trong ty toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chau tinh) OR (cua tinh))) OR (chieu sach)) - thanh trung va dung trong ty toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((chau tinh) OR (cua tinh))) or (chieu sach)) - thanh trung va dung trong ty toan ban*".