Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong quan » thong quan, duong qua
tinh dung » trinh dung, tinh quang, tinh huong
hieu luat » hieu qua
kiem soat » kiem toan
tri hieu » tri lieu, thi hieu, trien hieu
quan va » quan vi, quan ha, luan va
va kiem » van kien

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

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