Perhaps you should try some spelling variations:
dung doanh » dung dan, dung dong
dung toan » dung thang, dung thanh, dung tai
hieu soat » hieu suat, hieu hoat, hieu luat
binh nang » binh dang, tinh nang, binh giang
nang quan » ban quan, nang suat
kien soat » kiem soat, bien soan, kien hoa
quan van » luan van, quan va, quan luan
van kien » van tien, van hien, van chien
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 toan) or (dung doanh)) cao hieu soat ) or ( binh nang quan van kien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin ((dung toan) OR (dung doanh)) cao hieu soat ) OR ( binh nang quan van kien soat )).
• Adding a wildcard symbol may retrieve word variants: (( tin ((dung toan) or (dung doanh)) cao hieu soat ) or ( binh nang quan van kien soat ))*.