Perhaps you should try some spelling variations:
chien hoat » thien hoat, chien thuat, trien hoat
tinh dung » tin dung, tinh quang, tinh huong
hien soat » thien hoat, kiem soat, bien soan
van chien » van hieu, van tien
dung cam » dung lam, dung cac, dung nam
van hien » van hieu, van tien
cam van » cac van, cao van, nam van
luan » quan, lan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh dung cam van hien soat ) OR ( tinh dung luan van chien hoat ))~.
• Adding a wildcard symbol may retrieve word variants: (( trinh dung cam van hien soat ) or ( tinh dung luan van chien hoat ))*.