Perhaps you should try some spelling variations:
dung phan » dung nhan, dung luan, dung ha
dinh dong » dinh duong, dinh hong, dinh dung
dong suat » cong suat, dong sua, nang suat
phan dan » phan dang, phan dau, nhan dan
thi soan » thi hoan, thi loan, thi doan
dan thi » dang thi, tran thi, dinh thi
suat va » xuat va
va dien » va dieu, va lien, mai dien
dien so » bien so, dien o, dien co
tin » tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung phan dan thi soan ) or ( dinh dong suat va dien so ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung phan dan thi soan ) OR ( dinh dong suat va dien so )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung phan dan thi soan ) or ( dinh dong suat va dien so ))*.