Perhaps you should try some spelling variations:
luat quan » qua quan, luat dan, luc quan
kiem soat » kiem toan
dinh gian » dinh gia, dinh giap, tinh gian
gian lang » gian dan
hieu soat » hieu suat, hieu hoat, hieu luat
lang van » dang van, tang van, hoang van
van hieu » cao hieu
quan va » quan vi, quan ha, luan 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: (( trinh luat quan va kiem soat ) or ( dinh gian lang van hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh luat quan va kiem soat ) OR ( dinh gian lang van hieu soat ))*.