Perhaps you should try some spelling variations:
tinh nang » trinh nang, tin nang, tich nang
hieu hoat » hieu hoa, thien hoat, hieu luat
nang quan » ban quan, nang suat
kiem soat » kiem toan
dung lam » dung luan, dung tai, dung dat
van hieu » cao hieu
quan van » luan van, quan va, quan luan
van kiem » va kiem, van kien, van hien
lam van » lam san, nam van, dam van

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 lam van hieu hoat ) or ( tinh nang quan van kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung lam van hieu hoat ) OR ( tinh nang quan van kiem soat ))*.