Perhaps you should try some spelling variations:
chien soat » thien hoat
dung dang » dung dan, dung dong, dung danh
hien soat » thien hoat, kiem soat, bien soan
tinh dung » trinh dung, tinh huong, anh dung
van chien » van hieu, van tien
dang van » hoang van, hang va
van hien » van hieu, van tien

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung dang van hien soat ) or ( ((tinh dung) OR (tinh quang)) luan van chien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung dang van hien soat ) OR ( ((tinh dung) OR (tinh quang)) luan van chien soat ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung dang van hien soat ) or ( ((tinh dung) OR (tinh quang)) luan van chien soat ))*".