Perhaps you should try some spelling variations:
phung quang » phuong quang, hung quang, thuong quang
dung phung » dung phuong, dung chung, dung nhung
quang tien » quang dien, quang lien, quang yen
dung quan » dung quang, dung luan, luong quan
hieu luat » hieu qua
tien soan » bien soan, tien hoang, thien toan
quan van » luan van, quan va, quan luan
van hieu » cao hieu
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 quan van hieu luat ) or ( trinh dung phung quang tien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung quan van hieu luat ) OR ( trinh dung phung quang tien soan )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung quan van hieu luat ) or ( trinh dung phung quang tien soan ))*.