Perhaps you should try some spelling variations:
duong trong » dung trong
luong cong » dung cong, trong cong, cong cong
chao chu » cho chu, cua chu, cao cho
chu tinh » chau tinh, chua tinh, cuu tinh
cong tac » cong ty
ban khan » ban than, ban nhan, ban chan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao chu tinh - thanh cong tac ((duong trong) or (luong cong)) ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu tinh - thanh cong tac ((duong trong) OR (luong cong)) ban khan cap.
• Adding a wildcard symbol may retrieve word variants: chao chu tinh - thanh cong tac ((duong trong) or (luong cong)) ban khan cap*.