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