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
kiem soat » kiem toan
anh tran » anh tuan, anh toan, anh trac
quang va » quang van, quan va, quang ma
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 tran quang 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 tran quang va kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung ((quang phan) or (quang thanh)) hieu suat ) or ( anh tran quang va kiem soat ))*.