Perhaps you should try some spelling variations:
tinh dung » trinh dung, tin dung, tinh quang
kien soat » kiem soat, bien soan, kien hoa
hieu soat » hieu suat, hieu hoat, hieu luat
van kien » van tien, van hien, van chien
tin quan » tinh quang, trinh quan, lien quan
quan san » luan san, quan sat, quan van
van hieu » cao hieu
san van » tan van, tran van, dang van
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 kien soat ) or ( tin quan san van hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van kien soat ) OR ( tin quan san van hieu soat ))*.