Perhaps you should try some spelling variations:
quang luan » quan luan, quang tuan, quang uan
dung quang » dang quang, dung quan, luong quang
kiem soat » kiem toan
quang van » quang ban, quan van, quang uan
hieu soan » hieu toan, hieu van, bien soan
hieu suat » hieu luat, hieu qua
van kiem » va kiem, van kien, van hieu
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 kiem soat ) or ( tin dung quang van ((hieu soan) OR (hieu suat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang luan van kiem soat ) OR ( tin dung quang van ((hieu soan) OR (hieu suat)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh quang luan van kiem soat ) or ( tin dung quang van ((hieu soan) OR (hieu suat)) ))*".