Perhaps you should try some spelling variations:
luan luan » quan luan, luan luong, luan van
luan kiem » luat kiem, khuan kiem, luong kiem
kiem soat » kiem toan
dung quan » dung quang, luong quan, dang quang
quan xuan » quang xuan, quan luan, quan quan
xuan kien » xuan dien, xuan kieu, xuan vien
kien soat » bien soan, kien hoa, dien hoat
tin » tinh

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