Perhaps you should try some spelling variations:
quang luan » quan luan, quang tuan, quang uan
nang quang » nang quan, dang quang, hang quang
quang toan » quang tuan, quang tran, quang doan
hieu luat » hieu qua
dinh nang » dinh lang, dinh rang, dinh dang
tien soat » trien hoat, thien hoat, kiem soat
van hieu » cao hieu
tinh » trinh, minh

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

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