Perhaps you should try some spelling variations:
quang luan » quan luan, quang tuan, quang uan
dung quan » dung quang, dung luan, luong quan
bien soat » bien soan, kiem soat, bien sua
ban soan » bien soan, ban doanh, nang soan
quan doi » quan tri, quan li
bien so » bien doi
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quang luan van ban soan ) or ( tin dung quan doi ((bien soat) or (bien so)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang luan van ban soan ) OR ( tin dung quan doi ((bien soat) OR (bien so)) )).
• Adding a wildcard symbol may retrieve word variants: (( tinh quang luan van ban soan ) or ( tin dung quan doi ((bien soat) or (bien so)) ))*.