Perhaps you should try some spelling variations:
luan guong » luan luong, luan tuong, luan phuong
guong hieu » huong hieu, thuong hieu, dong hieu
dung nang » dun nang, dung dang, dung quang
nang phan » nang phat, nang thanh, nang quan
phan kiem » phan kien, phan mem, van kiem
kiem soat » kiem toan
hieu luat » hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung nang phan kiem soat ) or ( tin dung luan guong hieu luat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung nang phan kiem soat ) OR ( tin dung luan guong hieu luat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung nang phan kiem soat ) or ( tin dung luan guong hieu luat ))*.