Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, dien thanh
hien khanh » dien khanh, thien thanh, thien chanh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan 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) or (hien khanh))) or (hien hanh)) - hanh tranh va nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien nhanh) OR (hien khanh))) OR (hien hanh)) - hanh tranh va nhung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien nhanh) or (hien khanh))) or (hien hanh)) - hanh tranh va nhung cong tan van ban*.