Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, hang cong
anh quang » anh xquang, anh quan, nhanh quang
quang cua » quan cua, quang tuan, quang huy
cua nhung » va nhung
cong san » cong tac
san toan » van toan, dan toan, 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 ((dieu hanh) or (hien nhanh)) - anh quang cua nhung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (hien nhanh)) - anh quang cua nhung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (hien nhanh)) - anh quang cua nhung cong san toan ban*.