Perhaps you should try some spelling variations:
trinh nang » tinh nang, trinh bang, trinh mang
tinh dung » trinh dung, tin dung, tinh quang
kien soat » kiem soat, kien hoa, dien hoat
nang quan » ban quan, nang suat
bien soan » bien so
luan den » quan den, luan de, luan len
den kien » den dien, den hien, don kien
quan tan » quan tai, quan van, quai tan
tan bien » tang bien, tai bien, ran bien

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 luan den kien soat ) or ( trinh nang quan tan bien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan den kien soat ) OR ( trinh nang quan tan bien soan )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan den kien soat ) or ( trinh nang quan tan bien soan ))*.