Perhaps you should try some spelling variations:
trien hoat » tien hoa
tinh dung » trinh dung, tin dung, tinh huong
dung quan » dung quang, dung luan, luong quan
kiem soat » kiem toan
quan vi » quan tri, quan doi
quan li » quan ly, quan tri
quan ha » quan he
ha kiem » hoa kiem, va kiem, phan kiem

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quang ((quan vi) or (quan li)) trien hoat ) or ( tinh dung quan ha kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang ((quan vi) OR (quan li)) trien hoat ) OR ( tinh dung quan ha kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh quang ((quan vi) or (quan li)) trien hoat ) or ( tinh dung quan ha kiem soat ))*.