Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung dung » phuong dung, ung dung, thong dung
hoc chieu » hoc thieu, ho chieu, hoc hien
dung manh » duong manh, dung danh, hung manh
manh toan » thanh toan, anh tuan, tinh 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) or (thanh trung)) va nhung dung manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((thanh tung) OR (thanh trung)) va nhung dung manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((thanh tung) or (thanh trung)) va nhung dung manh toan ban*.