Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cua » doanh cua
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
manh cua » doanh cua, ban cua
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 ((tranh cua) OR (manh cua)) dung cong ((manh toan) or (ban than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((tranh cua) OR (manh cua)) dung cong ((manh toan) OR (ban than)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((tranh cua) OR (manh cua)) dung cong ((manh toan) or (ban than)) ban*".