Perhaps you should try some spelling variations:
dung quan » dung quang, luong quan, dang quang
hieu soat » hieu suat, hieu hoat, hieu luat
kien toan » kiem toan, dien toan, thien toan
quan van » quan va, quan luan, quan doan
van hieu » cao hieu
van kien » van tien, van hien, van chien
luan » lan

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 quan van hieu soat ) or ( tin dung luan van kien toan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung quan van hieu soat ) OR ( tin dung luan van kien toan ))*.