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
tang luan » dung luan
mang cua » manh cua, dung cua, ban cua
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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 - hanh ((mang cua) or (tang luan)) thong cong ((dan toan) or (ban than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((mang cua) OR (tang luan)) thong cong ((dan toan) OR (ban than)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((mang cua) or (tang luan)) thong cong ((dan toan) or (ban than)) ban*.