Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu quang » thieu quang, hieu quan, hieu qua
thanh cung » thanh cuong, thanh cong, thanh tung
thanh toan » thanh hoa, thanh san
dung cong » dung trong
cung ap » cung cap, cung bai, cung cac
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (hieu quang)) - thanh cung ap dung cong ((thanh toan) OR (tinh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu quang)) - thanh cung ap dung cong ((thanh toan) OR (tinh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (hieu quang)) - thanh cung ap dung cong ((thanh toan) OR (tinh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu quang)) - thanh cung ap dung cong ((thanh toan) OR (tinh toan)) ban*.