Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
dang huong » dang thuong, dang hung, dong huong
hien hanh » dieu hanh
hieu van » hieu va, thien van, lieu va
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
dan toan » van toan, dan than, 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: hoc ((((hieu van) or (hien hanh))) or (chieu xanh)) - thanh tung cua dang huong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu van) OR (hien hanh))) OR (chieu xanh)) - thanh tung cua dang huong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu van) or (hien hanh))) or (chieu xanh)) - thanh tung cua dang huong dan toan ban*.