Perhaps you should try some spelling variations:
khong quang » thong quang, hong quang, khong quan
quang luan » quan luan, quang tuan, quang uan
tinh khong » tinh khang, tinh huong, benh khong
thanh bien » thanh vien, thanh nien, thanh tien
thanh hien » thanh vien, thanh nien, thanh huyen
kiem soat » kiem toan
van kiem » va kiem, van kien, van hieu

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 ( tinh khong quang ((thanh bien) OR (thanh hien)) so ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang luan van kiem soat ) OR ( tinh khong quang ((thanh bien) OR (thanh hien)) so )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh quang luan van kiem soat ) or ( tinh khong quang ((thanh bien) OR (thanh hien)) so ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh quang luan van kiem soat ) or ( tinh khong quang ((thanh bien) OR (thanh hien)) so ))*.