Perhaps you should try some spelling variations:
tinh dung » trinh dung, tin dung, tinh quang
kiem soat » kiem toan
tinh quan » tinh quang, trinh quan, tin quan
hien hoat » thien hoat, hieu hoat, trien hoat
dien hoat » dien hoa, dien hat, trien hoat
van kiem » va kiem, van kien, van hieu
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 luan van kiem soat ) or ( tinh quan luan van ((hien hoat) OR (dien hoat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van kiem soat ) OR ( tinh quan luan van ((hien hoat) OR (dien hoat)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung luan van kiem soat ) or ( tinh quan luan van ((hien hoat) OR (dien hoat)) ))*".