Perhaps you should try some spelling variations:
chien hoat » thien hoat, chien thuat, trien hoat
tinh quan » tinh quang, trinh quan, tin quan
kiem soat » kiem toan
dinh dung » dinh duong, dinh hung, tinh dung
van chien » van hien, van hieu, van tien
luan va » luat va
va kiem » van kien

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quan luan va kiem soat ) or ( dinh dung luan van chien hoat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quan luan va kiem soat ) OR ( dinh dung luan van chien hoat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh quan luan va kiem soat ) or ( dinh dung luan van chien hoat ))*.