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