Perhaps you should try some spelling variations:
thong quang » thong qua, luong quang, thong dung
trinh thong » trinh thuong, trinh trong, trinh tong
minh thong » minh thuong, minh tuong, minh thang
quang van » quang ban, quan van, quang uan
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
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: (( minh thong quang van hieu soat ) or ( trinh thong quan va kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( minh thong quang van hieu soat ) OR ( trinh thong quan va kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( minh thong quang van hieu soat ) or ( trinh thong quan va kiem soat ))*.