Perhaps you should try some spelling variations:
hien khanh » hien hanh, hien nhanh, dien khanh
chieu xanh » chieu sach, chieu sang, chieu tinh
khong cang » thong cong, hong bang, khong dung
hanh hang » thanh hang, hang hang, hanh han
hay khong » bay khong, hang khong, hoac khong
hang hay » hang hai, hang ha, hoang hai
cang tan » cong tan, cung tan, tang tan
tan toan » tan tran, tap toan, van 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 ((hien khanh) or (chieu xanh)) - hanh hang hay khong cang tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien khanh) OR (chieu xanh)) - hanh hang hay khong cang tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien khanh) or (chieu xanh)) - hanh hang hay khong cang tan toan ban*.