Perhaps you should try some spelling variations:
thanh tung » thanh cong
chat trong » nhat trong, thuat trong, chat luong
doi chieu » doc hieu, doi chi, ho chieu
tung chat » dung chat, luong chat, cuong chat
cong tac » cong ty
tac dung » sach dung, xay dung, tin dung
dung bac » dong bac, dung cac, dung bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (mot chieu)) sach - thanh tung chat trong cong tac dung bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (mot chieu)) sach - thanh tung chat trong cong tac dung bac*.