Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
tinh van » dinh van, tinh va, tich van
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
can cau » van cau, ban cau, ca cau

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 xanh - canh ((tinh van) OR (trinh van)) hang ((cong dan) OR (cong san)) can cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh ((tinh van) OR (trinh van)) hang ((cong dan) or (cong san)) can cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh ((tinh van) OR (trinh van)) hang ((cong dan) or (cong san)) can cau*.