Perhaps you should try some spelling variations:
tinh dung » tin dung, tinh quang, tinh huong
kien soat » kiem soat, kien hoa, dien hoat
tinh nang » trinh nang, tin nang, tich nang
nang quan » ban quan, nang suat
quan tuan » quang tuan, quan luan, quan quan
tuan bien » tuan tien, tan bien, tuan kien
bien soan » bien so
luan de » luan den, luan ve, luat de
de kien » de kiem, de bien, de lien

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