Perhaps you should try some spelling variations:
tinh thong » tinh thuong, trinh thong, tinh khong
luong quan » duong qua
quan doan » quan hoang, chuan doan, chan doan
doan hieu » doanh hieu, doan dieu, doan thien
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
quan ha » quan he
ha kiem » hoa kiem, va kiem, phan kiem
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 doan hieu soat ) or ( tinh thong quan ha kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tien luong quan doan hieu soat ) OR ( tinh thong quan ha kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tien luong quan doan hieu soat ) or ( tinh thong quan ha kiem soat ))*.