Perhaps you should try some spelling variations:
xuat thong » xuat thuong, suat thong, luat thuong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
ganh nang » anh nang, nganh nong, van nang
ca thuong » cao thuong, cua thuong, va thuong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh 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: ho ((chieu sang) OR (hieu lang)) - ganh nang ((xuat thong) or (ca thuong)) cong hach toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - ganh nang ((xuat thong) OR (ca thuong)) cong hach toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - ganh nang ((xuat thong) or (ca thuong)) cong hach toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - ganh nang ((xuat thong) or (ca thuong)) cong hach toan ban*.