Perhaps you should try some spelling variations:
sang quang » dang quang, hang quang, tang quang
tinh dung » trinh dung, tinh quang, tinh huong
kiem soat » kiem toan
tinh sang » tinh quang, tinh trang, trinh san
van kiem » van kien, van hieu, van hien
quang va » quang van, quan va, quang ma
va kiem » van kien
luan » quan, 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) OR (tin dung)) luan van kiem soat ) or ( tinh sang quang va kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((tinh dung) OR (tin dung)) luan van kiem soat ) OR ( tinh sang quang va kiem soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((tinh dung) OR (tin dung)) luan van kiem soat ) or ( tinh sang quang va kiem soat ))".
• Adding a wildcard symbol may retrieve word variants: (( ((tinh dung) OR (tin dung)) luan van kiem soat ) or ( tinh sang quang va kiem soat ))*.