Perhaps you should try some spelling variations:
tinh thong » tinh thuong, trinh thong, tinh khong
luong quan » duong qua
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
quan van » luan van, quan luan, quan doan
van hieu » cao hieu
quan va » quan vi, quan ha, luan va
va kiem » van kien
tien » tieng, bien, vien

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

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