Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuoc dung » hoc dung, thuy dung
thuc hung » thuc chung, thuc nhung, thuc cung
thuc dung » thuy dung, tuc dung, thuat dung
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham
ho chieu » theo chieu, hoc thieu, mot chieu
phan cac » nhan cach, phan dau, phan lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - tinh toan ((thuc hung) OR (((thuc dung) OR (thuoc dung)))) cong than phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - tinh toan ((thuc hung) or (((thuc dung) OR (thuoc dung)))) cong than phan cac~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - tinh toan ((thuc hung) or (((thuc dung) OR (thuoc dung)))) cong than phan cac*.