Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
chieu sach » chinh sach, chiet tach, chieu sang
trong vat » trong van, trong va, trong dat
trong dan » trong dang, trong san, trong tan
ho chieu » theo chieu, hoc thieu, doi chieu
vat dung » van dung, va dung, viet dung
cong san » cong tac
thai cao » tai cao, thoai cac, thuat cao

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 - thanh trong vat dung ((trong dan) or (cong san)) thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trong vat dung ((trong dan) OR (cong san)) thai cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trong vat dung ((trong dan) or (cong san)) thai cao*.