Perhaps you should try some spelling variations:
trinh nang » tinh nang, trinh bang, trinh mang
tinh duong » trinh duong, dinh duong, binh duong
nang quan » ban quan, nang suat
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
quan van » luan van, quan va, quan luan
van hieu » cao hieu
di kiem » de kiem, bi kiem, thi kiem
qua di » qua da, qua dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh nang quan van hieu soat ) or ( tinh duong qua di kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh nang quan van hieu soat ) OR ( tinh duong qua di kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( trinh nang quan van hieu soat ) or ( tinh duong qua di kiem soat ))*.