Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
canh ban » can ban, canh dan, canh van
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
can van » cac van, can ban, tan van

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 nhanh - ((canh ban) or (can van)) quan nhung cong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((canh ban) OR (can van)) quan nhung cong van toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((canh ban) or (can van)) quan nhung cong van toan cau*.