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 san » cong tac
san tan » van tan, san van, san tay
tan tap » toan tap, han tap, tan tat

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) OR (((chuc nang) OR (vu quang)))) - nhan dang van luong cong san tan tap~".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) OR (((chuc nang) OR (vu quang)))) - nhan dang van luong cong san tan tap*.