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