Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
quang phan » quang chan, quang phat, quang khanh
hieu suat » hieu luat, hieu qua
tuan quan » toan quan, quan quan, tran quang
kiem soat » kiem toan
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 phan) or (quang thanh)) hieu suat ) or ( anh tuan quan va kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung ((quang phan) OR (quang thanh)) hieu suat ) OR ( anh tuan quan va kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung ((quang phan) or (quang thanh)) hieu suat ) or ( anh tuan quan va kiem soat ))*.