Perhaps you should try some spelling variations:
quang tran » quang tuan, quang trung, quang thanh
dung luat » dung luan, dung quat, dung cua
kiem soat » kiem toan
hieu soat » hieu suat, hieu hoat, hieu luat
tran van » luan van
van hieu » cao hieu
luat va » xuat va, luat ve, suat 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: (( tin dung luat va kiem soat ) or ( tinh quang tran van hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luat va kiem soat ) OR ( tinh quang tran van hieu soat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung luat va kiem soat ) or ( tinh quang tran van hieu soat ))*.