Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
anh quang » anh xquang, anh quan, nhanh quang
quang cua » quan cua, quang tuan, quang huy
cua nhung » va nhung
cong van » cong vang, cong san, song van
cong tac » cong ty
toan cao » toan ban, toan tap

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 xanh) or (hien nhanh)) - anh quang cua nhung ((cong van) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - anh quang cua nhung ((cong van) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - anh quang cua nhung ((cong van) or (cong tac)) toan cao*.