Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
thien hoat » trien hoat, thien thuat, tien hoa
dung lsan » dung luan, dung san, dung nhan
hieu luat » hieu qua
lsan van » luan van, san van, lan van
van hieu » cao hieu
tuan van » luan van, tran van, tan van

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 lsan van hieu luat ) or ( tinh quang tuan van ((chien soat) OR (thien hoat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung lsan van hieu luat ) OR ( tinh quang tuan van ((chien soat) OR (thien hoat)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung lsan van hieu luat ) or ( tinh quang tuan van ((chien soat) OR (thien hoat)) ))*".