Perhaps you should try some spelling variations:
hien khang » hien khanh, chien thang, thieu khang
hanh tranh » hanh trinh, hanh trang, lanh tranh
chung cong » nhung cong, chong cong, phung cong
cua chung » cua nhung, luan chung, luat chung
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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 khang - ((hanh tranh) or (canh tranh)) cua chung cong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien khang - ((hanh tranh) OR (canh tranh)) cua chung cong van tuan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien khang - ((hanh tranh) or (canh tranh)) cua chung cong van tuan ban*.