Perhaps you should try some spelling variations:
luong cong » dung cong, trong cong, cong cong
chuc danh » chuc nganh, thuc hanh, thuc dan
nhan dang » nhan dan, phan dang, tran dang
van luong » van duong, van cuong, nang luong
dang van » hoang van, hang va
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (((chuc nang) OR (vu quang)))) - nhan dang van luong cong van tan tap~.
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (((chuc nang) or (vu quang)))) - nhan dang van luong cong van tan tap*.