Perhaps you should try some spelling variations:
tinh dung » trinh dung, tin dung, tinh huong
dung ngan » dung nhan, dung luan
hieu luat » hieu qua
kiem soat » kiem toan
ngan van » nhan van, ngan han, ngan hang
van hieu » cao hieu
tuan va » toan va, luan va, than va
quan va » quan vi, quan ha, luan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh dung ngan van hieu luat ) or ( tinh quang ((tuan va) OR (quan va)) kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung ngan van hieu luat ) OR ( tinh quang ((tuan va) OR (quan va)) kiem soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung ngan van hieu luat ) or ( tinh quang ((tuan va) OR (quan va)) kiem soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh dung ngan van hieu luat ) or ( tinh quang ((tuan va) OR (quan va)) kiem soat ))*.