Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - thanh ((tung cua) or (dung cua)) thong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh ((tung cua) OR (dung cua)) thong cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh ((tung cua) or (dung cua)) thong cong tac toan ban*.