Perhaps you should try some spelling variations:
phung quang » phuong quang, hung quang, thuong quang
dung phung » dung phuong, dung chung, dung nhung
quang kien » quang dien, quang lien, quang tien
tinh dung » tin dung, tinh quang, tinh huong
hieu soat » hieu suat, hieu hoat, hieu luat
kien soan » bien soan, kiem toan, kiem soat
quan van » quan va, quan luan, quan doan
luan » lan

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