Perhaps you should try some spelling variations:
dung chung » dung cong, dung ung, dung trung
chung hieu » thuong hieu, khung nhieu, nhung dieu
minh thong » minh thuong, minh tuong, minh thang
hieu suat » hieu luat, hieu qua
thong qua » thong quan, thong cua, thong tu
van dung » van dong, xay dung, tin dung
quan dan » quan doan, quan den, quan van
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( dinh van dung chung hieu suat ) or ( minh thong qua quan dan than ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( dinh van dung chung hieu suat ) OR ( minh thong qua quan dan than )).
• Adding a wildcard symbol may retrieve word variants: (( dinh van dung chung hieu suat ) or ( minh thong qua quan dan than ))*.