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 va » quang van, quan va, quang ma
song van » hoang van, trong van, duong van
dang van » hoang van, hang va
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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