Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
manh toan » thanh toan, anh tuan, tinh toan
ban cong » bang cong, van cong, phan cong
san toan » van toan, dan toan, xuan toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((hanh tang) OR (nhanh lang)) cua ban cong ((san toan) OR (manh toan)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - ((hanh tang) or (nhanh lang)) cua ban cong ((san toan) OR (manh toan)) ban~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - ((hanh tang) or (nhanh lang)) cua ban cong ((san toan) OR (manh toan)) ban*.