Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong san » cong tac
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau

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 - ((nhanh quang) or (hanh trang)) cua nhung cong san phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((nhanh quang) OR (hanh trang)) cua nhung cong san phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((nhanh quang) or (hanh trang)) cua nhung cong san phan dau*.