Perhaps you should try some spelling variations:
trinh phan » trinh han, trinh quan, thanh phan
phan quan » phan quang, phap quan, pham quang
hieu luat » hieu qua
hien hanh » dieu hanh
quan van » luan van, quan va, quan luan
van hieu » cao hieu
dinh thi » dinh tri
van hien » van tien
thi van » thi lan, thi hanh, thi nang
van van » van ban, tan van, san van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh phan quan van hieu luat ) or ( dinh thi van van hien hanh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh phan quan van hieu luat ) OR ( dinh thi van van hien hanh ))*.