Perhaps you should try some spelling variations:
dung nhan » dung luan
kiem soat » kiem toan
tinh dung » tinh quang, tinh huong, anh dung
luan quan » luat quan, quan quan, luong quan
quan tren » quan trong, quang tran, quan tri
tren hoat » trien hoat, trong hoat, thien hoat
nhan tac » nhan tai, nhan tao, nhan tam
tac kiem » tac ke, thi kiem, va kiem

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

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