Perhaps you should try some spelling variations:
minh luong » dinh luong, minh tuong, minh cuong
dung quang » dang quang, dung quan, luong quang
luong quan » thong quan, duong qua
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
tin » tinh

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 quang van hieu soat ) or ( minh luong quan va kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung quang van hieu soat ) OR ( minh luong quan va kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung quang van hieu soat ) or ( minh luong quan va kiem soat ))*.