Perhaps you should try some spelling variations:
dong thanh » truong thanh
hanh dong » anh dong, ha dong
thanh van » thanh san, thanh toan, thanh phan
kiem soat » kiem toan
dinh duan » dinh xuan, dinh duong, dinh quang
phan hieu » van hieu, phan kien, gian hieu
hieu soat » hieu suat, hieu hoat, hieu luat
van kiem » va kiem, van kien, van hieu
duan van » luan van, doan van, quan van
van phan » van phong, van thanh, luan phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( hanh dong thanh van kiem soat ) or ( dinh duan van phan hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( hanh dong thanh van kiem soat ) OR ( dinh duan van phan hieu soat ))*.