Perhaps you should try some spelling variations:
duong luan » dung luan, dong luan, duong quan
quang quan » quang tuan, quang uan, quan quan
hieu luat » hieu qua
kiem soat » kiem toan
quan van » quan va, quan luan, quan doan
van kiem » va kiem, van kien, van hieu
hieu so » thieu so

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( dinh duong luan van ((hieu so) or (hieu luat)) ) or ( tinh quang quan van kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( dinh duong luan van ((hieu so) OR (hieu luat)) ) OR ( tinh quang quan van kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( dinh duong luan van ((hieu so) or (hieu luat)) ) or ( tinh quang quan van kiem soat ))*.