Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hien nhanh » hien hanh, thien thanh, tien thanh
anh quang » anh xquang, anh quan, nhanh quang
quang vat » quang va, quang van, quang phat
dung dong » dung cong, vung dong, dung trong
vat dung » van dung, va dung, viet dung
dong van » duong van, dang van, dong von
van toan » van tuan, van tan, van thanh
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 ((chieu xanh) or (hien nhanh)) - anh quang vat dung dong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hien nhanh)) - anh quang vat dung dong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hien nhanh)) - anh quang vat dung dong van toan ban*.