Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh toan » thanh hoa, thanh san
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
he tong » he thong, he trong, he cong

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: ho chieu xanh - ((hanh tang) OR (hanh mang)) he tong cong ((thanh toan) OR (tinh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((hanh tang) OR (hanh mang)) he tong cong ((thanh toan) or (tinh toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((hanh tang) OR (hanh mang)) he tong cong ((thanh toan) or (tinh toan)) cau*.