Perhaps you should try some spelling variations:
nang khuan » khang khuan, nang quan, nang phan
khuan kiem » khuan viem, phan kiem, hoan kiem
dung nang » dun nang, dung dang, dung quang
kiem soat » kiem toan
luan xuan » luong xuan, luyen xuan, quang xuan
xuan hieu » luan hieu, xuan kieu, xuan dieu
hieu suat » 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 khuan kiem soat ) or ( tin dung luan xuan hieu suat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung nang khuan kiem soat ) OR ( tin dung luan xuan hieu suat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung nang khuan kiem soat ) or ( tin dung luan xuan hieu suat ))*.