Perhaps you should try some spelling variations:
quang quan » quang tuan, quang uan, quan quan
dung toan » dung doanh, dung thang, dung thanh
kiem soat » kiem toan
hieu luat » hieu qua
quan cao » quang cao, quan cau, quan ao
toan va » doan va, tran van, toan ban
va kiem » van kien

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