Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
cong thanh » dong thanh, cong trinh, cong tan
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
cap duong » cau duong, cac duong, cap dung
thanh van » thanh san, thanh toan, thanh phan
cong cap » cung cap, cong cau, cong cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc danh) or (chua xang)) - thanh cong cap duong cong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua xang)) - thanh cong cap duong cong thanh van ban*.