Perhaps you should try some spelling variations:
kiem soat » kiem toan
tinh quan » tinh quang, trinh quan, sinh quan
hieu soat » hieu suat, hieu hoat, hieu luat
van kiem » va kiem, van kien, van hien
tin quan » tinh quang, trinh quan, lien quan
van hieu » cao hieu
lan van » lang van, tan van, san van

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 luan van kiem soat ) or ( ((tinh quan) OR (tin quan)) lan van hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan van kiem soat ) OR ( ((tinh quan) OR (tin quan)) lan van hieu soat ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung luan van kiem soat ) or ( ((tinh quan) OR (tin quan)) lan van hieu soat ))*".